|
2011 Accelerator Update Archive
NuMI reported receiving 8.81E18 protons on target for the period from 12/19/11 to 12/26/11.
- Muon Rings personnel conducted special high intensity studies
- New Meson Fermilab Test Beam Facility experiment 1019 began taking beam
- Booster beam off for short time due to a RF station's transformer suffering a coil short
- Booster and Main Injector RF problems fixed
- The access for maintenance on 12/20/11 got extended to replace a MI kicker
- Beam to NuMI was delayed on 12/20/11 due to a Lambertson power supply problem
- Meson MS2 LCW system had glycol added and was up and running by mid afternoon, 12/21/11
- Linac technician replaced a quadrupole power supply
- Repairs on a Linac RF station LCW leak held off beam
- There will be a six-hour access starting at 7 AM on Tuesday, 12/20/11, for maintenance, necessary repairs, and Interlock testing
- FTBF experiment T-1015 taking beam
- Booster personnel conducted studies
- OpsCo will have a four-hour access early next week
- NuMI reported that this was their third best week for protons on target
- Neutron Therapy facility power supply LCW leak repaired
- A MiniBooNE power supply LCW leak repaired
- Operators and Booster personnel resolved a problem with console #5 sending interrupts on its own
- Booster RF station 11 has been tripping off regularly. They will need to access to make rep
- Muon Rings personnel and an Instrumentation person worked on their BPM
- Meson FTBF experiments T-1015 and T-1017 began taking beam
- MTA suffers power outage: they weren't taking beam
- Linac quadrupole power supply problems
- Problems with KRF5.
- Problems with Booster bulk supply (B:CEP400)
- Booster, Main Injector, and Muon Rings personnel conducted studies
- Booster kicker personnel repaired a kicker (MSK11) that was holding off beam to Switchyard
- Operators made adjustments to the I- Source arc current
NuMI reported receiving 8.62E18 protons on target for the period from 11/28/11 to 12/5/11.
- Booster, Main Injector, and Muon Rings personnel conduct studies
- M01 LCW problems holds off Meson FTBF T-978 experiment for a shot time
- operators completed a 750 KeB line tune and a Booster injection tune
- A Booster RF station (BRF16) was having trouble
- MiniBooNE beam turned off during two day shifts for MI-12 service building air conditioning work
- Booster beam shut off for access and BRF13 repairs
- A string of NuMI Dipole magnets tripped off due to high temperature. Personnel accessed the Main Injector and back flushed the magnets
- Booster, Main Injector, NuMI, and Muon areas all accessed and conducted maintenance work during Dipole work
- A Booster RF station (BRF13) tripped off and would not reset. Operators bypassed the station and tuned around it
- Booster will access on Thursday morning (12/1/11) to repair BRF13
- MiniBooNE will shut down tomorrow (12/1/11) to install a new air conditioning unit
NuMI reported receiving 8.31E18 protons on target for the period from 11/21/11 to 11/28/11.
- Meson FTBF experiment T-978 pauses their beam while experiment T-1012 take short run over the holidays
- NuMI BPMs requires reboots
- Main Injector RF station 15 bypassed
- Linac RF station 5 down for repairs - halts all beam for ~18 hours
- Linac RF station 1 down for repairs - halts all beam for ~2 hours
- Linac personnel changed solenoid power supply for a KLystron
- NuMI personnel accessed their absorber room and cleaned a water skid filter
- Muon personnel conducted studies
- MTA took beam
NuMI reported receiving 9.22E18 protons on target for the period from 11/14/11 to 11/21/11.
- Muon Ring (formerly Antiproton Source) studies
- Problems with a Booster RF station and I- Source vacuum pump trips
- NuMI suffered with BPM problems
- This morning, 11/21/11, Linac personnel will work on a Klystron RF station and NuMI will inspect an Absorber room water skid.
- Neutron Therapy Facility treating patients
- NuMI BPM problems resolved when VME crate failed and was replaced
- A Main Injector beam valve closed due to a compressed air leak and held off beam to FTBF experiment T-978
- Water Group personnel repaired a Linac Klystron RF station water leak that held off beam for a short time
- Operators valved out a Linac sensor that had a split water hose, which didn't interrupt beam
NuMI reported receiving 7.53E18 protons on target for the period from 11/7/11 to 11/14/11.
- Muon personnel conducted studies
- MI Personnel conducted Recycler studies
- Vacuum problems held off the Main Injector for about 18 hours
- Lambertson problems held off NuMI for about two hours
- Accesses on Wednesday
- Booster RF problems
- T-978 begin taking bean on Wednesday
- RF trips troubled the Booster
- Problems with the MINOS near detector halted beam at times for NuMI
- There will be a two hour access this afternoon to fill a kicker with Fluorinert
NuMI reported receiving 1.04E19 protons on target for the period from 10/31/11 to 11/7/11. This set a record for being the highest number of protons on target for a week.
- Neutron Therapy Facility treating patients
- Booster, and Switchyard personnel conduct studies
- Operators find and fix liquid nitrogen leak at A0
- Main Injector gap clearing kicker problems
- Linac, Booster, Main Injector, and Switchyard personnel conduct studies
- Neutron Therapy Facility treating patients
- Main Injector personnel conducted a Recycler closed orbit study
- Neutron Therapy Facility personnel treated patients
- Meson FTBF experiment T-1015 completed its run
- Main Injector personnel conducting g-2 studies today, 11/2/11
- Neutron Therapy Facility treating patients
- Antiproton Source personnel conducted Mu2e studies
- Meson FTBF experiment T-1015 taking beam
- ComEd power glitch tripped off Linac, Booster, and Main Injector equipment
- Vacuum pumps trip off in 8 GeV line and
- Starting on Tuesday, 11/1/11, the Antiproton Source Department will be know as the Muon Department
- Main Injector RF station repairs solved NuMI beam permit problems
- Meson FTBF experiment T-1015 begins taking beam
- The Neutron Therapy Facility treats patients
- Antiproton Source personnel conduct Mu2e studies
- NuMI sets record for most protons on target in one day, 1.439E18
- MI personnel began g minus 2 (g-2) studies
- NuMI beam permit trips due to a MI RF station (MIRF17) problem
- Booster had West Anode Power Supply trips due to BRF9 and 10 problems
- Antiproton Source personnel conduct reverse proton studies
- Meson FTBF experiment T-1015 has been cleared to take beam today
NuMI reported receiving 8.27E18 protons on target for the period from 10/17/11 to 10/24/11.
- The Neutron Therapy is treating patients
- Meson FTBF experiment T-1008 taking beam
- Main Injector and Antiproton Source personnel conducted studies
- The Main Injector P1 transfer line suffered a vacuum burst
- Chiller #3 at CUB tripped off, caused the 55 LCW system to warm up, and required Linac to turn off some equipment
- Two Meson FTBF experiments received permission to take beam: T-1008 and T-1015
- a Main Injector Micro Wave Absorber had one of its ferrite rods drop into the center of the beam pipe and block beam: Mechanical technicians found and fixe the problem
- A Mechanical Support Engineer lowered the MI-62 LCW system's temperature set limit by five degrees and that seems to have solved the NuMI HV101 magnet trips
- Pbar personnel conduct proton studies
- Neutron Therapy Facility treating patients
- A MI Lambertson magnet power supply continues to cause problems
NuMI reported receiving 9.1E18 protons on target for the period from 10/10/11 to 10/17/11.
- Meson FTBF experiment T-992 taking beam
- NuMI magnet HV101 high temperature trips under investigation
- I- Source's sudden current drop repaired by Linac personnel
- Antiproton Source personnel conduct reverse proton studies
- Booster personnel conducted studies
- FESS replaces MTA's faulty breaker trip unit
- MiniBooNE horn power supply's ground fault limit adjust back to nominal
- MiniBooNE off for short time due to Horn problems
- NuMI off for short times due to ventilation problems
- MI Lambertson magnet power supply repaired
- FESS changes out bad MTA breaker trip unit
- Power glitch tripped off equipment in Linac, Booster, and MI
NuMI reported receiving 8.21E18 protons on target for the period from 10/3/11 to 10/10/11.
- Neutron Therapy Facility treating patients
- Pbar personnel terminated Pbar's last stack of antiprotons at 11:17 AM on 10/7/11
- MTA suffers from a power outage
- MiniBooNE off due to water skid problem and then due to a Horn power supply problem
- NuMI repositioned their target and reconfigured their Horn power supply for antineutrino operations
- The Pbar LCW leak was discovered
- Meson FTBF experiment T-922 taking beam
- Pbar will terminated its stack today, ending the antiproton program at Fermilab
- Antiproton Source personnel conduct studies with their remaining antiprotons
- Problems with a Switchyard magnet delays beam to FTBF experiment T-992
- MuMI prepares to move its target to a new position
- Wednesday (10/5/11) will be a planed maintenance day
The Integrated Luminosity for the period from 9/26/11 to 10/3/11 was 49.66 inverse picobarns. NuMI reported receiving 8.21E18 protons on target during this same period.
- One store provided ~6.5 hours of luminosity to the CDF and D0 experiments
- NuMI switched their Horn polarity
- Helen Edwards terminated store 9158 and shut off the Tevatron forever
- Pbar stopped stacking antiprotons forever
- A Kautz Rd substation power outage caused the loss of the stash
- NuMI will prepare to reposition its target on Wednesday (10/5/11) morning
- Four stores provided ~44.75 hours of luminosity
- Operators rebooted the Main Injector low level RF system
- The next Meson FTBF experiment T-1012 began taking beam
- Special Edition of the Operation Summary
- Three stores provided ~46.5 hours of luminosity
- Linac has Klystron vernier problems
- Pelletron tripped off, but reset
- Tevatron Electron Lens study
- MiniBooNE surpassed 1E21 Protons On Target in antineutrino mode
The Integrated Luminosity for the period from 9/19/11 to 9/26/11 was 58.32 inverse picobarns. NuMI reported receiving 2.1E18 protons on target during this same period.
- Five stores provided ~62 hours of luminosity
- Meson FTBF experiment T-1017 ended their run
- Access needed to fill Recycler kicker with Fluorinert
- NuMI resumed taking beam on Saturday morning (9/24/11)
- FESS personnel installed a portable air conditioner at sector C1 Electronics
- Operators performed MI coalescing checks; everything looked good
- Three stores provided ~40.25 hours of luminosity
- A new Meson FTBF experiment T-1017 began taking beam
- MI and Instrumentation personnel tested new BPM software
- NuMI personnel completed a low intensity scan of their newly installed target
- Tevatron personnel conducted a study using two high intensity proton bunches
- NuMI personnel reported leaks in their target cooling system that need repair. This will delay their taking beam until Saturday, 9/234/11
- Two stores provide ~14 hours of luminosity
- Cryo System personnel repair the Tevatron sector F3 wet engine
- Meson FTBF Meson experiment T-922 ended their run
- The Tevatron quenched during a shot setup on a separator spark
The Integrated Luminosity for the period from 9/12/11 to 9/19/11 was 27.36 inverse picobarns. NuMI reported receiving 2.6E18 protons on target during this same period.
- Five stores provided ~43.75 hours of luminosity
- Tevatron completed its run of 450 GeV 3x3 study stores
- Pbar Debuncher kicker pulsing problem fixed
- The MiniBooNE Horn tripped off due to an strip line air pressure sensor
- Store 9131 aborted due to a problem with the C3 dump
- Store 9135 quenched due to a kicker prefire
- The Tevatron completed its run of 450 GeV 3x3 study stores
- The Tevatron quenched twice during wet squeezes
- Booster RF suffered from a short communications problem
- The next Meson FTBF experiment, T-922, began taking beam
- A Pbar Debuncher kicker had its power supply replaced
- One store provided ~ 5 hours of luminosity
- Tevatron personnel conduct two more 450 GeV 3x3 study stores
- MI ground fault finally found and repaired
- Tevatron cryo system down during wet engine repair
- Power glitch caused problems with Linac RF, Booster RF, Main Injector kickers, and the Tevatron ramp
- NuMI personnel will begin replacing their target tomorrow morning, 9/15/11
The Integrated Luminosity for the period from 9/5/11 to 9/12/11 was estimated at 47.62 inverse picobarns. NuMI reported receiving 8.74E18 protons on target during this same period.
- Four stores provided ~28 hours of luminosity
- MI accessed to fill Kicker with Fluorinert
- Tevatron personnel conducted many 450 GeV low energy study stores
- NuMI suffered from beam permit drops
- Store 9097 aborted due to a bad CAMAC card
- Store 9099 aborted due to a standby power unit failure
- Two stores provided ~25 hours of luminosity
- Low energy Tevatron studies
- PA for LRF1 was replaced
- Three stores provided ~36.75 hours of luminosity
- A Booster RF station (BRF7) tripped off many times
- The Tevatron quenched during shot setup due to a kicker prefire
- MI RF station (MIRF3) trips caused many NuMI beam permit trips
- Controls personnel repaired problems with the MI-30 Beam Position Monitors
- Five stores provided ~62 hours of luminosity
- Linac I- Source vacuum valve closed
- Booster RF system trips due to bad timing card
- Tevatron quench during shot setup due to kicker prefire
- Pbar tripped off due to a target blower motor failure
- Three stores provided ~33 hours of luminosity
- Pbar kicker cables re-terminated (D:EKIK)
- Tevatron suffered a beam abort due to bad vacuum and a quench due to kicker problems
- Tevatron RF cavity (TRF5) LCW leak required access to sector F0 to clean up and repair
- Fermilab lowers power usage for ComEd power test
- Eight stores provided ~58.5 hours of luminosity
- Booster RF work completed
- Linac RF station #3 repaired
- MiniBooNE Horn problem fixed
- Pelletron suffered a full discharge
- Antiproton injection to Tevatron lost due to kicker prefire
- Two stores provided ~25.75 hours of luminosity
- Pelletron problems continue
- Booster used access to repair two RF stations
- Two Tevatron 3x3 study stores ended with a quench and an abort
- MiniBooNE horn charging power supply problem delayed beam
- Run Coordinator will allow Linac and Booster maintenance work today
- One store provided ~8.5 hours of luminosity
- Tevatron Transfer Hall vacuum leak repaired
- Tevatron personnel conduct 3x3 studies
- Antiproton source target air blower repaired
- Booster West Anode Power Supply problems
- Pelletron solenoid problems
The Integrated Luminosity for the period from 8/15/11 to 8/22/11 was 31.61 inverse picobarns. NuMI reported receiving 6.63E18 protons on target during this same period.
- Five stores provide ~29.75 hours of luminosity
- Booster had RF and kicker problems
- D0 cold compressor tripped off
- Tevatron aborted once and quenched once
- Tevatron developed A17 vacuum leak
- Pelletron back on line
- Four stores provided ~23.25 hours of luminosity
- Store 8996 was a 3X3 study store and lost due to a quench
- Pelletron suffered full discharge and put in recovery mode
- ComEd offsite power glitch caused many devices to trip off
- Two stores provided ~20.5 hours of luminosity and two study stores that did not provide any useful luminosity
- Tevatron Kautzky valve repair held off beam
- Pelletron conditioning held off Recycler stochastic cooling
- Problematic ACNET code halted transfer to Recycler
- Two store provided ~47.75 hours of luminosity
- Massive water leak in the Linac gallery
- Two Tevatron quenches
- Five stores provided ~37.75 hours of luminosity
- Ground water leak found in the 750 KeV area
- Pelletron brought back online
- Tevatron Collimator issue resolved
- Tevatron suck at 90 GeV due to bad UPS in sector A2
- Six store provided ~ 41.5 hours of luminosity
- Pelletron problems continue
- Many NuMI beam permit trips due to Main Injector RF problems, but all the RF stations were on and operating
- Resistivity of the Antiproton Source 95 Degree LCW system was dropping; FESS change deionizing bottles
The Integrated Luminosity for the period from 8/1/11 to 8/8/11 was 5.82 inverse picobarns. During the same time period NuMI took 6.57E18 of beam.
- Five stores provided ~20.25 hours of luminosity
- Tevatron cryo systems and vacuum ready to go
- Tevatron quenched during turn on
- Store 8954 aborted due to loss of power to control rack
- Pelletron problems continue to delay its use
- MTA hopes to take beam this morning (8/8/11)
- Antiproton Source LCW leak found and fixed
- New Meson Fixed Target Test Beam experiment T-1010 begins taking beam
- MTA taking beam
- ComEd power glitch tripped off Linac, Booster, and Main Injector; everything reset
- Work continues on the Recycler Pelletron
- Tevatron should be ready to establish a store later this evening
- Tevatron still in cryo system and vacuum recovery mode
- Much maintenance work being done throughout the accelerator complex
- Pbar resumes stacking
- Lightning strike ends the Meson FTBF T-1008's current run at Fermilab
- Cryo Coordinator hopes the Tevatron cryo system will be ready to go on Friday (8/5/11)
The Integrated Luminosity for the period from 7/25/11 to 8/1/11 was 17.71 inverse picobarns. During the same time period NuMI took 8.8E17 of beam.
- There were no stores due to the Tevatron cryo systems being in recovery mode
- Main Substation brought back online
- Operators and accelerator personnel work to recover all system
- Beam established to NuMI, MiniBooNE, the Meson FTBF T-1008 experiments
- Controls problems halted MTA from taking beam
- One store provided ~12.75 hours of luminosity
- NuMI magnet cabling work continues
- The Main Accelerator Safety System dropped
- The Master Substation and Kautz Road Substation lost power due to ComEd power lines going down in storm
- Many accelerator devices had to be replaced or repaired
- Tevatron cryo and vacuum systems recovery will take three to six days
- Three stores provided 31.5 hours of luminosity
- Pbar Kicker personnel repaired abort kicker
- Store 8927 quenched due to CDF beam abort
- Main Injector and NuMI down for (V108) cable pulls
- Linac personnel repair RF station (LRF3)
- Pbar accessed to clean clogged fan exhaust on Debuncher RF cavity (DRF3)
- Four stores provide ~28.2 hours of luminosity
- Lightning strikes caused the loss of stores 8912 and 8923
- NuMI magnet V108 has six high voltage cables, out of sixteen, grounded together and must be replaced
- Lightning tripping off equipment and systems everywhere
- Hoses for MiniBooNE quadrupole magnet (Q847) found clogged
- Three stores provided ~39.25 hours of luminosity
- Pbar LCW leak found and fixed
- MI LCW leak required LCW pumps turned off
- MI LCW leak found and fixed
- NuMI V108 magnet/power supply cabling problem
- Three stores provided ~29.25 hours of luminosity
- High temperatures and failing air conditioners keep FESS personnel on the go
- High temperatures have caused many equipment and beam problems
- Cryo system technicians repaired the Tevatron sector D1 wet engine flywheel bearings
- Store 8904 aborted due to Tevatron quadrupole trip
- Booster personnel repaired the 400 MeV chopper
- New Meson FTBF T-1008 experiment begins taking beam
- NuMI hopes to resume taking normal beam on Thursday, 7/21/11
The Integrated Luminosity for the period from 7/11/11 to 7/18/11 was 49.33 inverse picobarns. NuMI is off for target replacement; they expect to resume taking beam this Friday, 7/22/11.
- Four stores provided ~48.25 hours of luminosity
- High temperatures in MiniBooNE's MI-12 service building require power supplies to be shut off
- MI coalescing studies
- Regeneration of CUB's column #1 halted due to water leak
- Pelletron suffered many trips
- Air Conditioning problems occurred at many places
- Main Injector/Tevatron injection problems
- The plans for today are to survive the heat
- Four stores provided ~21 hours of luminosity
- Tevatron heat exchanger work continues
- MI LCW leak found and fixed
- Pbar LCW leak still a mystery
- Store 8891 aborted due to Tevatron vacuum valves
- MTA took beam
- Search for Tevatron ground fault halted when fault disappeared
- KRF6 and LRF4 problems held off shot setup for approximately six hours
- Two stores provided ~15.25 hours of luminosity
- Lightning strikes cause equipment problems
- Water technicians work on Tevatron heat exchangers
- MI damper problem fixed its self - probably a loose connector
- Store 8880 intentionally aborted due to Tevatron E3 wet engine loosing its belt
- E3 wet engine needed complete overhaul
- MI-12 service building still suffers from temperature problems
- MTA conducts first test of beam through its RF cell filled with nitrogen
- EE Support personnel work on the MI Lambertson power supply
- Meson MTest experiment T-1015 completes run at Fermilab
- Run Coordinator will allow MI an access to search for LCW leak today (7/13/11)
The Integrated Luminosity for the period from 7/4/11 to 7/11/11 was 58.1 inverse picobarns. NuMI reported receiving 3.55E18 protons on target during this same period.
- Four stores provided ~33.25 hours of luminosity
- NuMI conducted a target scan and found water in their target. NuMI is off for about 2.5 weeks for a target change
- Since the Tevatron needed vacuum work, much of the accelerator complex conducted maintenance during the day shift on 7/8/11
- MI suffered from coalescing and damper problems
- MiniBooNE off due to high temperatures in the MI-12 service building
- Stash lost on 7/11/11 due to lightning strike
- Run Coordinator allows Tevatron heat exchanger work and other jobs during the day shift that would not hinder stacking and stashing
- Three stores provided ~30.75 hours of luminosity
- MI kicker (I:KPS5S) repaired
- Relay replaced for Tevatron sector D3 LCW pump
- Pbar safety system testing completed
- Tevatron kicker E48 problems began
- FESS reported problems with Tevatron sector C3 pond water pump
- Stash lost due to MI-60 LCW pumps tripping off
- Today (7/8/11), Run Coordinator will allow access for Tevatron vacuum work and CDF and D0 access, for Tevatron kicker work, for a NuMI target scan, for Booster studies, and for a thermal scan of the MI-60 LCW pump motors and breaker panels
- Three stores provided ~40 hours of luminosity
- MI-12 service building air conditioner tripped off, but MiniBooNE continued taking beam while the building cooled down
- Cryo system technicians tighten belts on Tevatron wet engines
- Main Injector, Recycler, Pelletron, Booster, and MTA all accessed for various maintenance work
- Operators investigating high LCW temperatures at C1 & 2 found three-way valve set in wrong position
- MI kicker's Thyratron failed
- Run Coordinator shuts off Tevatron on 6/6/11 for D0 and CDF access, Pbar and Tevatron safety system testing, and for the 6-8 hour replacement of a MI kicker's Thyratron
The Integrated Luminosity for the period from 6/27/11 to 7/4/11 was 59.43 inverse picobarns. NuMI reported receiving 5.12E18 protons on target during this same period.
- Five stores provided ~ 64.5 hours of luminosity
- Tevatron sector E48 kicker causing problems
- NuMI dehumidifier off due to problems for weekend
- Power glitch tripped off many devises
- MI-12 service building high temperature caused MiniBooNE to turn off for seven hours
- A1 transfer line suffered a vacuum burst
- Linac RF station (LRF2) problems held off beam for an hour
- Three stores provided ~29 hours of luminosity
- Safety system testing continues throughout the accelerator complex
- Linac personnel repair LRF4 & 5 and the I- Source
- Tevatron quenched during injection of antiprotons due to air compressor trip that caused kicker misfire
- New Meson FTFB experiment T-1015 begins taking beam
- Three stores provided ~33.25 hours of luminosity
- Safety system testing site wide
- BRF16 sparking problems
- Switchyard vacuum problems
- NuMI target scans
- Tevatron cryo system wet engine work
- Meson FTBF experiment T-978 completes run
- Minor power glitch trips off power supplies and other devices
- Booster off for RF work on 6/29/11
The Integrated Luminosity for the period from 6/20/11 to 6/27/11 was 66.87 inverse picobarns. NuMI reported receiving 4.35E18 protons on target during this same period.
- Four stores provided ~ 59.07 hours of luminosity
- Pbar Vault exhaust fan repaired
- Store 8836 aborted due to Tevatron LCW problem
- MTA took beam
- I- Source tripped off due to water resister water skid trip
- Linac off due to LRF3 & 4 power amplifier troubles
- RF personnel repair BRF12
- Tevatron abort due to Heater Firing Unit failure
- Linac off due to door interlock fault, followed by Linac safety system testing
- Three stores provided ~ 34 hours of luminosity
- NuMI power supply E:V118 lower trip limit lowered
- CDF and D0 access their collision halls
- Tevatron RF station (TRF4) had its LCW filter changed
- Beam aborted during shot setup
- MTA (MuCool) took an hour of beam
- A loose cable connection on BFR5 causes Booster problems
- Today: FESS will repair Pbar exhaust fan, Booster will work on BRF5, MTA will test a power supply, and NuMI will conduct a target scan
- Four stores provided 44.25 hours of luminosity
- NuMI personnel conducted target scans
- Booster beam tripped off when an RF equipment rack lost its power
- Proton Source beam suffered from Booster West Anode power supply trips
- Interlock technicians begin conducting safety system tests of the accelerators
- Tevatron personnel conduct luminosity leveling studies
- NuMI reports possibly finding the cause of their helium leak
The Integrated Luminosity for the period from 6/13/11 to 6/20/11 was 78.44 inverse picobarns. NuMI reported receiving 5.64E18 protons on target during this same period.
- Five Stores provided ~62.5 hours of luminosity
- Cryo system technicians repair the Tevatron sector F4 wet engine flywheel
- Pbar and RF personnel resolve air-flow cooling problem for Accumulator RF station
- Booster RF station BRF6 bypassed and replace with BRF19
- Two transfers of antiprotons lost
- Booster extraction kicker problem repaired
- NuMI beam tripped off when helium flow through the target increased - it was reset
- NuMI personnel conducting target scans today (6/20/11). They will move the target on Tuesday (6/21/11)
- The MI phasing controller still causing problems
- Tevatron Electron Lens (TEL) Front End work completed
- MiniBooNE conducts air pressure test of MI-12 service building
- Meson water-to-air cooling tower problems
- Tevatron personnel conduct hollow beam collimation
- Pbar Debuncher Lens LCW flow meter problem discovered
- Four stores provided ~37.25 hours of luminosity
- Cryo system technicians worked on the Tevatron sector B2 system
- The Main Injector Excitation Control And Regulation system causes problems
- Store 8816 set second highest luminosity mark with 424.56E30
- Tevatron Hollow Beam studies
- Store 8816 lost due to lightning strike
- Six stores provided ~62 hours of luminosity
- Store 8805 aborted due to a power supply trip
- NuMI began receiving beam on Saturday morning (6/11/11)
- Store 8809 aborted due to a vacuum indication
- Booster beam instability fixed
- Three stores provided ~15 hours of luminosity
- FESS personnel switched to different power cables for the Tevatron sector A0 main breaker
- Store 8797 lost due to Tevatron quench
- Store 8799 aborted due to lightning strike
- Store 8801 aborted due to lightning strike
- Tevatron and Main Injector vacuum problems fixed
- Heavy rains caused flooding problems
- Tevatron personnel conducted Electron Cloud studies
- Feeder #36 fault caused power loss for part of Proton area
- NuMI should resume taking beam on Saturday, 6/11/11
- Three stores provided ~44.65 hours of luminosity
- Mechanical support personnel installed a portable air compressor in the Main Injector
- Booster personnel removed NorthStar experimental equipment from MI-8
- 123E10 of antiprotons lost due to MI vacuum burst
- Store 8797 aborted due to power cable fault at Tevatron sector A0
- NuMI hopes to be taking beam by 6/11/11
- Five stores provided ~67 hours of luminosity
- Kicker trip during transfer caused loss of antiprotons
- Booster and MiniBooNE have problems due to high temperatures that reduced their intensities
- MTA taking beam
- The Booster NorthStar experiment ended on Sunday morning
- Three stores provided ~22.75 hours of luminosity
- NorthStar isotope experiment installed in MI-8 line for a three day run
- Cryo system technicians overhauled two Tevatron wet engines
- Store 8787 quenched due to a computer problem that moved collimators into the colliding beams
- Linac chopper repaired
- Three stores provided ~40.75 hours of luminosity
- MI-52 Kicker problem fixed
- Electron Cooling problems slowed shot setup for store 8782
- Lightning strike caused loss of store 8782 - No quench
- MI RF troubled by vacuum burst
- MTA (MuCool) took beam
- Tevatron access today (6/1/11) for wet engine repairs
The Integrated Luminosity for the period from 5/23/11 to 5/30/11 was 58.41 inverse picobarns.
- Five stores provided ~41.5 hours of luminosity
- NuMI off for target replacement
- Tevatron Electron Lens noise caused beam problems
- Tevatron sector B3 wet engine repairs halted - B3 cryo system operated via Jewel Thompson (JT) valve
- Store 8770 quenched due to abort kicker prefire
- Lightening strikes interrupts shot setup and disrupts other systems
- Four stores provided ~37.5 hours of luminosity
- Tevatron personnel conduct crystal collimator studies
- Jasmin experimenters finish studies in the Antiproton Source
- NuMI personnel complete Horn scans
- D0 dry engine repaired
- Four stores provided ~23.5 hours of luminosity
- Tevatron personnel conduct crystal collimator studies
- Recycler's Electron Cooling communications restored
The Integrated Luminosity for the period from 5/16/11 to 5/23/11 was 59.22 inverse picobarns. NuMI took 4.73E16 of beam during this same time period.
- Four stores provide ~47.25 hours of luminosity
- NuMI off for target repairs
- Tevatron personnel conduct hollow beam studies
- Tevatron quench during transfer of antiprotons
- EE Support repairs Tevatron quadrupole regulator's load cable
- Lightening strike on the evening of May 22, caused Recycler kickers to prefire, the loss of the stash, and lost communication with Pelletron
- Four stores provide ~ 37.5 hours of luminosity
- Tevatron personnel conduct several crystal collimator studies
- Tevatron personnel conduct a hollow beam study
- Operations reported network storms
- Run Coordinator allows CDF a three-hour access this morning, 5/20/11
- Three stores provided ~14.25 hours of luminosity
- Tevatron wet engines at A3 and F3 repaired
- NuMI's target failed. Experiment off for one month
- Tevatron D2 wet engine blows seal, caused store 8741 to quench
- Tevatron quenched during checkout when Quench Protection Monitor rebooted itself
- Tevatron personnel conducts crystal collimator study
The Integrated Luminosity for the period from 5/9/11 to 5/16/11 was 63.88 inverse picobarns. NuMI took 4.15E18 of beam during this same time period.
- Five stores provided ~63 hours of luminosity
- Tevatron personnel conduct Hollow Beam studies
- EE Support personnel help Operations turn on the Tevatron Electron Lens
- Booster suffered from low-level RF room temperature problems
- NuMI target problems held off NuMI beam
- Necessary cryo system repairs on wet engine flywheels required the Run Coordinator to terminated store 8737 this morning, May 16th
- Three stores provided ~19.25 hours of luminosity
- FTBF experiment T-978 completed their run on May 11th
- Power glitch affected many systems
- Lightning strike caused partial loss of stash and tripped off equipment
- MI quadrupole tripped off on ground fault indication - bus problem repaired by Mechanical Support
- Pbar personnel replace the target
- FTBF experiment T-979 began their run on May 13th
- Four stores provided ~37.5 hours of luminosity
- Network storms and Linac RF problems delayed termination of store 8719
- Pbar sweeper magnet controls problems halted stacking for an hour
- A Switchyard power supply failure held off beam to FTBF experiment T-978 for about three hours
The Integrated Luminosity for the period from 5/2/11 to 5/9/11 was 76.47 inverse picobarns. NuMI took 3.98E18 of beam during this same time period.
- Three stores provided ~63.25 hours of luminosity
- Linac personnel repaired multiple problems with LRF1 & 5
- Network storms delayed shot setup
- Three stores provide ~39.75 hours of luminosity
- Tevatron personnel conduct hollow beam studies
- Linac personnel repairs KRF7's LCW leak
- Operators tuned to correct MI-8 collimator beam positions
- The Thursday day shift was full of accesses for repairs
- MIRF7 tripped off and operators bypassed the station
- Cryo system personnel replaced a wet engine flywheel at F2 on Friday, 5/6/11
- Three stores provided ~45.5 hours of luminosity
- Controls personnel repair Pbar repeater problem
- Store 8709 sets record with a luminosity of 431.07E30
The Integrated Luminosity for the period from 4/25/11 to 5/2/11 was 71.36 inverse picobarns. NuMI took 4.06E18 of beam during this same time period.
- Four stores provided ~64 hours of luminosity
- Store 8701 set a new record with a initial luminosity of 416.61E30
- Booster RF system trips caused some minor downtime
- Pbar Debuncher kicker repairs interrupted stacking for three hours
- A beam instability at the beginning of store 8702 cause a loss of luminosity
- Three stores provided ~43.25 hours of luminosity
- Tevatron RF station 4 repaired in-between stores
- Operators tuned on the I- Source output
- Store 8700 set a new record with a luminosity of 405.25E30
- Operators monitored the conditioning for a New Muon Lab coupler cavity
The Integrated Luminosity for the period from 4/18/11 to 4/25/11 was 49.01 inverse picobarns. NuMI took 3.36E18 of beam during this same time period.
- Four stores provided ~41.25 hours of luminosity
- Cryo system personnel replaced a fly wheel and bearings on two Tevatron wet engines
- Linac personnel repaired a loose drive filament connection on LRF2
- D-Zero mad several accesses for necessary repairs
- Linac personnel repaired a vacuum leak on RF tank #2
- Pbar worked on an Accumulator emittance problem
- The Tevatron quenched with no store in the machine
- Three stores provided ~34 hours of luminosity
- MI-20 LCW pump brought back online
- MuCool studies
- MuCool took high intensity beam to their target
- Linac RF station power amplifier replaced
- Cryo system personnel will replace the flywheel for Tevatron sector A4 wet engine at 10 AM, Friday, 4/22/11
- Three stores provided ~22.75 hours of luminosity
- NuMI beam intensity raised to 1.6E13 protons per pulse
- Store 8666 quenched due to a control card failure
- A lightning strike aborted store 8672
- Tevatron and MuCool studies
The Integrated Luminosity for the period from 4/11/11 to 4/18/11 was 36.6 inverse
picobarns. NuMI took 4.9E18 of beam during this same time period.
- Five stores provided ~61.5 hours of luminosity
- Pbar personnel work on their dump LCW system
- NuMI beam intensity lowered to 1.4E13 due to target LCW leak
- MiniBooNE beam intensity lowered due to MiniBooNE and MI beam permit trips
- There was no delivered luminosity for this period due to Tevatron kicker work
- Linac and Booster personnel conduct Neutron Therapy Facility beam studies
- Tevatron kicker work completed on Thursday night (4/14/11)
- MuCool experiment took some beam
- Two stores provided ~16.75 hours of luminosity
- MI personnel brought machine back from RF system trip
- Tevatron quench during shot setup due to kicker prefire
- NuMI beam permit trips due to Lambertson power supply high temperatures
- MI LCW tripped off and caused the loss of the Recycler stash
- Store 8641 quenched due to kicker prefire
- Tevatron kickers put in conditioning mode
- Kicker personnel repaired Recycler kicker
- Five stores provided ~66.5 hours of luminosity
- NuMI personnel conduct target scans
- MI personnel conduct G minus 2 studies
- Pbar dump LCW system developed leak
- NuMI begins taking beam
- Linac Klystron RF station's charging power supply repaired
- Linac RF station repaired
- Three stores provided ~34.75 hours of luminosity
- Main Injector ramp trip caused the transfer loss of antiprotons to the Recycler
- CALICE experiment T-978 returned to the Fermilab Test Beam Facility
- NuMI conducting target scans, will resume normal operations on Saturday, 4/9/11
- Two stores provide ~31.25 hours of luminosity
- CDF and D0 accessed their collision halls
- FTFB T-932 experiment completed their run
- Tevatron access to investigated sump pump and vacuum pump problems
The Integrated Luminosity for the period from 3/28/11 to 4/4/11 was 36.95 inverse picobarns. NuMI was off to replace its target.
- Seven stores provided ~83.25 hours of luminosity
- Tevatron quench during shot setup due to RF station trip
- Store 8606 quenched due to vertical corrector magnet power supply glitch
- Proton Source beam quality problems being investigated
- New Meson FTFB experiment T-932
- Tevatron quench during shot setup due to RF station trip
- Store 8603 quenched due to vertical corrector magnet glitch
- Proton Source investigating beam position problems
- New Meson FTFB T-932 experiment began taking beam
- MI LCW magnet leak found and fixed
- Tevatron quench caused by lightening strike
- No stores due to D16-2 magnet replacement
- D16-2 magnet replacement is complete
- Tev is cold
- Main Ring, Booster and F-Sector acceses
- No stores due to D16-2 magnet replacement
- Booster and Main Injector RF Problems
- No stores due to D16-2 magnet replacement
- Main Injector water leak
- Booster, Main Injector, and F-Sector accesses
- No stores due to D16-2 magnet replacement
- New Recycler stash record (608.6E10)
- RF problems in Linac and Main Injector
The Integrated Luminosity for the period from 3/14/11 to 3/21/11 was 70.75 inverse
picobarns. NuMI is off for target replacement.
- Three stores provided ~44 hours of luminosity
- Time Line Generator problems fixed
- Tevatron RF station trip caused luminosity loss
- Controls personnel replaced bad Meson Septa motors
- Booster personnel repaired chopper
- Lightning strikes caused store 8594 to abort and many other accelerator problems
- Tevatron cryo magnet failed and must be replaced - Tevatron off for 10-11 days
- Four stores provide ~44.25 hours of luminosity
- Recycler kicker problems
- Operators filling Antiproton Source water system
- FESS configured the MI-30 LCW pump to run remotely
- Fours stores provided ~39.31 hours of luminosity
- Recycler kicker pre-fired
- MiniBooNE resumed taking beam 3/15/11 during day shift
- Meson Septa motors replaced
The Integrated Luminosity for the period from 3/7/11 to 3/14/11 was 6.18 inverse
picobarns. NuMI is off for target replacement.
- Three stores provided ~20.75 hours of luminosity
- Main Injector repaired transductor problem
- Antiproton Source power supply replaced
- Tevatron repairs higher order power supply problem
- Instrumentation technician repairs Tevatron BPM Front End
- Store 8571 lost due to a quench
- Tevatron sector B0 cryo system compressor failed
- The accelerator shut down, due to ComEd work, continued
- Personnel at the Central Utility Building rotated LCW pumps for maintenance work
- Water Work personnel found and fixed a Main Injector leak
- Operators monitored the New Muon Lab's cryo cavity coupler conditioning
- A cryo compressor in Tevatron F-sector tripped off
- Operators monitored the conditioning of the Tevatron separators
- Operations reported that the TEV magnet Tilt Meters detected the magnitude 8.9 earthquake off the coast of Japan
- Due to ComEd work, Fermi accelerators are in shutdown
- Tevatron, Operators, and other personnel collect Tevatron magnet roll measurements
- FESS personnel replace breaker at Tevatron sector D3
- Central Utility Building personnel conduct pump maintenance
The Integrated Luminosity for the period from 2/28/11 to 3/7/11 was 52.1 inverse picobarns. NuMI was off to replace its target.
- Four stores provided ~41 hours of luminosity
- Store 8549 quenched due to a kicker problem
- A Switchyard Septa tripped off due to a vacuum problem
- The Tevatron quenched during shot setup due to another kicker problem
- Linac and Operator personnel tuned up the I- Source
- Tevatron and Antiproton Source personnel conducted studies
- Due to ComEd work, Operations turned off the accelerator complex for machine upgrades and repairs
Four stores provided ~34.5 hours of luminosity
- Store 8542 quenched due to a kicker pre-fire
- A new Meson MTest experiment, T-1012 (a TAU neutrino Test) began
- The accelerator complex will be down from 3/7/11 to 3/11/11 due to ComED work
- The machines will perform upgrades and necessary repairs during this downtime
- Three stores provided ~42.5 hours of luminosity
- Two Main Injector electrical safety system ground faults caused the loss of two
stashes
- Tevatron personnel will conduct an end-of-store study on store 8542
The Integrated Luminosity for the period from 2/21/11 to 2/28/11 was 41.81 inverse
picobarns. NuMI reported receiving 3.98E18 protons on target during this same
period.
- Four stores provided ~33.35 hours of luminosity
- NuMI target cooling leak investigation continues
- Tevatron personnel conducted end-of-store studies
- Linac personnel repairs low-energy Buncher
- MI resolves power supply phasing problems
- D0 required eight-hour access for repairs
- Store 8543 lost due to lightning strike
- Shot setup halted due to RF trip and quench
- Two stores provided ~47 hours of luminosity
- Linac personnel repaired a RF station (LRF4)
- The Cryo System for Pbar's stochastic cooling failed
- NuMI tripped off on a target LCW indication
- MI-8 suffered a power glitch that aborted the stash
- The glitch also caused MI main bus regulation problems
- Three stores provided ~32 hours of luminosity
- The Antiproton Source worked on their target station LCW system
- NuMI had problems with their Humidity control system
- Tevatron personnel conducted beam alignment studies
The Integrated Luminosity for the period from 2/14/11 to 2/21/11 was 33.64 inverse
picobarns. NuMI reported receiving 7.42E18 protons on target during this same
period.
- Six stores provided ~50.75 hours of luminosity
- Vacuum personnel fixed a vacuum leak on the Tevatron D17 collimators
- The Antiproton Source developed with water flow sensor
- On Monday morning (2/21/11), Pbar personnel accesses and began repairs on two water leaks
- Four stores provided ~30.5 hours of luminosity
- Pelletron repairs continue
- NuMI recovered from water skid trip
- University of Iowa experiment T953 resumed taking beam in Meson
- Tevatron developed collimator and vacuum problems in sector D
- Three stores provided ~33.5 hours of luminosity
- Interlock personnel replace a bad MI card
- Controls personnel replace a bad Pbar card
- Tevatron cryo system quenches after store 8498 was terminated
- Booster personnel replaced power supply for low-level RF system
- Booster personnel repairs termination for Chopper
- Network Storm hits; Controls personnel located and isolated problem, but the storm affected many pieces of equipment
- Preaccelerator personnel switched from the H- Source to the I- Source
- Booster personnel worked on extraction issues
- D0 required an 8-hour access on 2/16/11 to repair detector
The Integrated Luminosity for the period from 2/7/11 to 2/14/11 was 52.78 Pb-1 inverse picobarns. NuMI reported receiving 7.33E18 protons on target during this same period.
- Five stores provided ~40.5 hours of luminosity
- MiniBooNE frozen sump discharge line cleared
- Tevatron lost some luminosity due to earthquake in Chile
- Store 8488 aborted - no cause found
- ComEd power glitch caused the loss of store 8492, the stash, the stack, cryo systems, CDF equipment, the Pelletron, and the failure of equipment throughout the accelerators
- MI safety system tripped off due to a ground fault indication
- Two Tevatron stores provided ~45.5 hours of luminosity
- Linac personnel worked on LRF1 and LFR2
- Main Injector ground fault found
- Three stores provided ~29.3 hours of luminosity
- MiniBooNE suffered three hours of downtime due to system problems
- Tevatron Personnel conducted orbit kicker tests
- Interlock personnel conducted Meson Safety system tests
- Linac personnel repaired a RF station that suffered a power surge
- On Thursday, 2/10/11, MI will access for 2-3 hours to make RF repairs
The Integrated Luminosity for the period from 1/31/11 to 2/7/11 was 43.64 inverse
picobarns. NuMI reported receiving 5.14E18 protons on target during this same
period.
- Four stores provided ~37.25 hours of luminosity
- EE Support replaced VCB relays at Tevatron sectors D3 and A3
- NuMI vacuum circuit breaker repaired
- Further Tevatron vacuum circuit breaker inspections halted beam to NuMI and Pbar
- Meson Cryo Central suffered power outage
- CHL reported a Cold Box failure - Operations aborted store 8478
- Booster kicker cable repaired
- MTest experiment T-978 completes run
- Two stores provided ~33.5 hours of luminosity
- Kautz Rd substation tripped off
- Plenty of power problems due to the snow storm
- Pbar off due to critical device problem
- Many kicker problems in MI and Recycler
- Stash lost due to Kautz Rd substation trip, which halted beam to many other areas
- Store 8467 aborted during end-of-store study
- NuMI off due to power supply VCB problem
- Operations restored beam everywhere by the end of the Friday midnight shift,
except to NuMI
- Three stores provided ~44.25 hours of luminosity
- Kicker problems cause loss of antiproton transfers to Recycler
- FESS finds and later fixes air conditioning problem in MI-31
- H-Source has problem with extraction
- Controls fixes communication problem with A0 compressor room
- MI has safety system tests
- Linac works on LRF3
- Power glitches due to storm took down many RF systems, caused the loss of the stash, and dropped MI interlocks
- Recovering from snowstorm problems
The Integrated Luminosity for the period from 1/24/11 to 1/31/11 was 67.3 inverse
picobarns. NuMI reported receiving 8.65E18 protons on target during this same
period.
- Six stores provided ~61.5 hours of luminosity
- The network storm disabled beam to T-978
- Cryo personnel repaired TEV sector B1 wet engine
- Controls personnel repaired the NuMI front end that was causing the network storms
- Four stores provided ~28 hours of luminosity
- Store 8447 quenched due to a separator spark
- Store 8454 quenched due to kicker pre-fire
- MTest beamline vacuum problems resolved
- The accelerator complex suffered some downtime due to a network storm
- Four stores provided ~44.75 hours of luminosity
- MTest Experiment T-978 off due to beamline vacuum problems
- NuMI LCW expansion tank repaired
- Linac switched from the I- Source to the H- Source
- ARF1 and MRF5 work completed
The Integrated Luminosity for the period from 1/17/11 to 1/24/11 was 70.18 inverse picobarns. NuMI reported receiving 8.61E18 protons on target during this same period.
- Four stores provided ~56.75 hours of luminosity
- An LCW leak on a Pbar Accumulator magnet required an access to repair
- Shot setup held up due to noisy readbacks
- TEV quench during scrape in shot setup
- Linac personnel will switch from I- Source to H- Source today
- Five stores provided ~36.75 hours of luminosity
- Store 8430 aborted when a low beta magnet power supply tripped off
- Problems with a Pbar RF station interrupted stacking for 30 minutes
- Problems with a MI RF station held off beam to NuMI and Pbar for 30 minutes
- Three stores provided ~45.25 hours of luminosity
- A network storm hit and caused some downtime
The Integrated Luminosity for the period from 1/10/11 to 1/17/11 was 64.13 inverse picobarns. NuMI reported receiving 7.82E18 protons on target during this same period.
- Five stores provided ~ 45.75 hours of luminosity
- FESS found serious problems with a CUB chilled water system
- Store 8423 aborted due to a Tevatron power supply problem
- Four stores provided ~41 hours of luminosity
- NuMI conducted target and Horn scans
- Operations rebooted MECAR
- Store 8417 aborted due to Tevatron RF station trip
- Three stores proved ~44.75 hours of luminosity
- MI-60 upper bend power supply repaired
- Short down times caused by Linac power supply trips and Buncher trips
The Integrated Luminosity for the period from 1/3/11 to 1/10/11 was 10.79 inverse
picobarns. NuMI reported receiving 7.64E18 protons on target during this same
period.
- Three stores provided ~18.5 hours of luminosity
- The TEV quenched many times over the weekend
- FTBF T-978 (CALICE) has returned to the MTest beamline
- A Pbar CAMAC power supply failed and caused the loss of 38mA of beam from the stack
- One store provided ~8.25 hours of luminosity
- Tevatron recovery continues
- First Store since Christmas
- No stores due to TEV sector B1 vacuum problems
- Safety personnel beginning safety system checks
- TEV sector B1 vacuum problems fixed and cryo system cooldown begins
The Integrated Luminosity for the period from 12/22/10 to 1/3/11 was ~53.9 inverse picobarns. NuMI reported receiving 8.81E18 protons from 12/2710 to 1/3/11.
- Five stores provided ~65.5 hours of luminosity
- T-932 (Diamond) began taking beam at MTest
- Store 8388 quenched due to a vacuum problem
- Cryo system technicians began a warm up of B1 to change out a spool piece
- NuMI and MiniBooNE continued to take beam as it was available
- Beam to T-932 stopped due to accesses into the Transfer Hall
- Machines conducted maintenance and studies
|
