Wednesday, Feb. 11, 2015

Have a safe day!

Wednesday, Feb. 11

3:30 p.m.
Director's Coffee Break - WH2XO

4 p.m.
Fermilab Colloquium - One West
Speaker: Jacob Bean, University of Chicago
Title: Exoplanets in HD

Thursday, Feb. 12

11 a.m.
Theoretical Physics Seminar (NOTE TIME) - Curia II
Speaker: Pilar Coloma, Fermilab
Title: Neutrino Oscillation Phenomenology at Long-Baseline Experiments

2 p.m.
Neutrino Seminar - WH8XO
Speaker: Boris Kayser, Fermilab
Title: Neutrino Masses and Majorana Neutrinos

3:30 p.m.
Director's Coffee Break - WH2XO

Visit the labwide calendar to view Fermilab events


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Wilson Hall Cafe

Wednesday, Feb. 11

- Breakfast: crustless quiche casserole
- Breakfast: ham, egg and cheese English muffin
- Western barbecue burger
- Moroccan vegetable stew
- Kielbasa and kraut
- Zesty turkey pastrami sandwich
- Pork carnitas soft taco
- Split pea soup
- Texas-style chili
- Assorted calzones

Wilson Hall Cafe menu

Chez Leon

Wednesday, Feb. 11
- Grilled Asian flank steak
- Soba noodle salad
- Pineapple flan

Friday, Feb. 13
- Mussels with white wine and thyme
- Spinach- and blue cheese-stuffed filet mignon
- Warm roasted vegetable salad
- White chocolate and raspberry creme brulee

Chez Leon menu
Call x3524 to make your reservation.


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Fermilab contributes to SLAC LCLS-II with cutting-edge technology and expertise

Fermilab is developing superconducting accelerating cavities similar to this one for SLAC's Linac Coherent Light Source II. Photo: Reidar Hahn

Now one year into its five-year construction plan, the Linac Coherent Light Source II, an electron accelerator project at SLAC, will produce a high-power free-electron laser for cutting-edge scientific explorations ranging from refined observations of molecules and cellular interactions to innovative materials engineering. Cornell University as well as Argonne National Laboratory, Lawrence Berkeley National Laboratory, Fermilab and Thomas Jefferson National Accelerator Facility are partners in the SLAC-directed project.

"We at the laboratories are all developing close ties," said Richard Stanek, Fermilab LCLS-II team leader. "The DOE science lab complex will be stronger for this collaboration."

In 2015, Fermilab will intensify its LCLS-II contribution in the overlapping areas of superconducting radio-frequency (SRF) accelerator technology and cryogenics, critical components that distinguish LCLS-II from SLAC's current LCLS facility, whose laser production has enabled noted scientific investigations in cancer treatment and other important areas.

SLAC physicist Marc Ross, LCLS-II cryogenics systems manager, said LCLS cannot keep up with scientists' requests for use. The existing LCLS facility and LCLS-II combined will offer researchers laser X-rays with a wide range of properties.

"This new approach will transform the repetition rate of LCLS — from 120 pulses per second to up to 1 million per second," Ross said. "This will allow a completely new class of experiments and, eventually, a much larger number of experimental stations operated in parallel."

Fermilab Technical Division physicists Hasan Padamsee, division head, and Anna Grassellino and their team are working on SRF technology for LCLS-II, in particular on implementing Fermilab's two recent findings to reduce the needed cryogenic power. In one innovation, known as nitrogen doping, Grassellino found that infusing a small amount of nitrogen gas when preparing the superconducting cavities — the structures through which beam is accelerated — reduces two main causes of the usually expected resistance to radio-frequency currents.

"It is exciting to see our discovery becoming an enabling technology for LCLS-II," Grassellino said.

Grassellino's high-Q team has also found that the cavities' cooling dynamics significantly helps expel magnetic flux, another major source of cavity power dissipation. The Fermilab high-Q team, together with Cornell University and Jefferson Lab, are currently working on calibrating the cooling thermogradient for LCLS-II.

Stanek said Fermilab is advancing its SRF work with its LCLS-II participation.

"I see this project taking us from an R&D phase of SRF technology, which is where we have been the past six to eight years, and moving our expertise into production," Stanek said. "This is a big step forward."

Fermilab and Jefferson Lab are working closely together on the cooling systems that enable the cavities' superconductivity. Fermilab scientist Camille Ginsburg leads LCLS-II cryomodule production at Fermilab, and Fermilab engineer Arkadiy Klebaner manages the LCLS-II cryomodules distribution system.

"To build a high-energy beam using SRF technology, LCLS-II needed expertise in cryogenics," Klebaner said. "So Jefferson Lab and Fermilab, who both have special expertise in this, were ready to help out."

A cryogenic plant generating the refrigeration, a cryogenic distribution system for transporting the refrigeration into cryomodules and the cryomodules themselves make up the LCLS-II cryogenics. Jefferson Lab will provide the cryogenic plant, and Fermilab is in charge of developing the cryogenic distribution system. Jefferson Lab and Fermilab are jointly developing LCLS-II's 35 cryomodules, each one about 10 meters long.

Fermilab's contribution draws on the Tevatron's cryogenics and on SRF research begun for the proposed International Linear Collider. The lab's LCLS-II experience will also help with developing its planned PIP-II accelerator.

"So when we build the next accelerator for Fermilab, PIP-II, then we will have already gotten a lap around the production race course," Padamsee said.

All labs have something special to contribute to LCLS-II, Ross said.

"The Fermilab team have figured out a way to make this kind of accelerator much better operating in the cold temperature that superconducting technology requires," Ross said. "It is worthy of special recognition."

Rich Blaustein

In the News

Pure science = pure fun at Fermilab open house

From Daily Herald, Feb. 9, 2015

Fermilab proved Sunday that pure science could be pure fun at its annual Family Open House that drew thousands to Wilson Hall on the Batavia campus.

Supported in part by Fermilab Friends for Science Education, the day featured tours of the linear accelerator/main control room and live presentations, including a journey through cosmic structure. Visitors also had the opportunity to ask questions of Fermilab scientists.

Read more

In the News

Synopsis: Dark matter not so dark?

From Physics, Feb. 4, 2015

The calling card of dark matter is that it remains invisible to telescopes. But that doesn't mean that dark matter can't occasionally interact with light. Researchers have now examined the possibility that dark matter scatters star light, producing a potentially detectable glow around galaxies. The team found no conclusive evidence of this "light halo," but they argue that longer wavelength observations could offer an opportunity to "see" dark matter.

Read more

From the Technical Division

Two new test stands for the Fermilab SRF program

Mike Tartaglia

Mike Tartaglia, head of the Test and Instrumentation Department, wrote this column.

The Technical Division facilities and capabilities to advance the laboratory's strategic vision for future accelerators based on superconducting radio-frequency (SRF) technology have been under vigorous development for the past decade. The most recent development was the startup of operations of two vertical test stands. Arriving at this milestone required strong leadership and extensive time and resources.

The project to build the second and third SRF vertical test stands in the Test and Instrumentation Department began in 2008, following successful completion of the first stand, VTS-1. Funding from the American Recovery and Reinvestment Act became available at the time and paid for the groundwork and major components. The project kicked off with the excavation and civil construction in 2009 of the underground pits that would house the new test vessels, or cryostats, in Industrial Building 1 (IB1). R&D funds for the proposed International Linear Collider also supported the construction, and the RRCAT laboratory in India made major contributions to the design and fabrication oversight of the cryostats, which were successfully delivered in 2011.

The project scope included two large cryostats, four complicated top-plate assemblies, a new preparation area to install and instrument accelerating cavities for tests, expansion of the radio-frequency power and instrumentation systems, and extension of radiation shielding and safety interlocks. It included adding a new labyrinth of cryogenic piping, valves and controls to make efficient use of liquid helium during test operations.

To enable full use of the new test stands, the project included and concurrently made several major improvements to the IB1 refrigeration plant and vacuum systems. The facility was built while also supporting several other large projects and maintaining a vigorous IB1 operations schedule in support of magnet and VTS-1 cavity testing.

Installation of the latest two test stands was completed in January 2014. Because of the cavity R&D test program intensity and complexity of the cryogenic safety considerations, it took until December 2014 to complete VTS-2 and VTS-3 acceptance tests and establish operational readiness for safe routine operation.

The same management team responsible for VTS-1 led the VTS-2 and VTS-3 design and construction, with Camille Ginsburg as project manager. My predecessor as Test and Instrumentation Department head, Ruben Carcagno, managed the IB1 construction project from inception to completion, along with project engineer Cosmore Sylvester, who led the major procurements and general coordination. Barry Norris provided the engineering lead in many areas and helped organize the final system installations. Yuriy Pischalnikov took over responsibility as VTS area leader from Joe Ozelis. Working closely with laboratory radiation safety organizations and SRF Department liaison Alex Melnychuk, Yuriy coordinated the final acceptance tests for the RF and safety systems. The Test and Instrumentation Cryogenic Operations Group under engineer Bruce Squires' leadership demonstrated that the new stands meet their performance requirements and are now supporting routine operation to meet SRF project needs.

These accomplishments are the result of prolonged hard work by a large project team that deserves our grateful acknowledgment. We recognize and greatly appreciate the assistance and contributions of many unheralded experts and reviewers from around the lab who made the safe completion and operation of these facilities possible.

Photo of the Day

Staircase geometry

The Wilson Hall atrium staircase cables criss-cross the surrounding space. Photo: Stephanie Timpone, PPD
Safety Update

ESH&Q weekly report, Feb. 10

This week's safety report, compiled by the Fermilab ESH&Q Section, contains one incident.

A employee felt pain in his left ankle and knee. This is a pending claim.

See the full report.


Today's New Announcements

Philosophical Society - Feb. 12

Scottish country dancing Tuesday evenings at Kuhn Barn

Open gym basketball for gym members

Barnstormers Delta Dart Night - today

Fermilab Chamber Series presents Callipygian Players - Feb. 15

Barn Dance - Feb. 15

School's Day Out - Feb. 16 and 27

Core Computing Division briefs on MS Office 2013/365 - Feb. 17

English country dancing at Kuhn Barn - March 1

NALWO Puerto Rican cooking demo - March 9

URA Thesis Award competition deadline - March 20

Managing Conflict on March 24

Requests now accepted for on-site housing for summer 2015

Getting paid the greener way - get paperless pay stubs

New ebook: The CRC Handbook of Thermal Engineering

Microsoft Office 2013 ebooks

Windows 8.1 approved for use

Fermi Singers seek new members in New Year

Need cash for college? Abri is awarding two $1,000 scholarships

Indoor soccer

Vaughan Athletic Center membership rates