Wednesday, July 31, 2013

Have a safe day!

Wednesday, July 31

3:30 p.m.


Thursday, Aug. 1

2:30 p.m.
Theoretical Physics Seminar (NOTE LOCATION) - WH3NE
Speaker: Arsham Farzinnia, Tsinghua University
Title: Hadron Collider Production of Massive Color-Octet Vector Bosons at Next-to-Leading Order

3:30 p.m.

Click here for NALCAL,
a weekly calendar with links to additional information.

Ongoing and upcoming conferences at Fermilab


Take Five


Weather Chance of thunderstorms

Extended forecast
Weather at Fermilab

Current Security Status

Secon Level 3

Current Flag Status

Flags at half staff

Wilson Hall Cafe

Wednesday, July 31

- Breakfast: crustless quiche casserole
- Breakfast: ham, egg and cheese English muffin
- Cajun turkey burger
- Smart cuisine: portobello and peppers over soft polenta
- Seafood newburg
- Turkey bacon panini
- Mandarin orange pecan chicken salad
- Tuscan chicken noodle soup
- Texas-style chili
- Assorted calzones

Wilson Hall Cafe menu

Chez Leon

Wednesday, July 31
- Antipasto salad
- Amaretto cheesecake

Friday, Aug. 2

Chez Leon menu
Call x3524 to make your reservation.


Fermilab Today

Director's Corner

Frontier Science Result

Physics in a Nutshell

Tip of the Week

User University Profiles

Related content


Fermilab Today
is online at:

Send comments and suggestions to:

Visit the Fermilab

Unsubscribe from Fermilab Today


Beam back in Main Injector

Beam circulated through the Main Injector on Tuesday for the first time since April 2012. Photo: Reidar Hahn

On Tuesday, protons circulated around the Main Injector accelerator for the first time since the Fermilab accelerator complex shut down for upgrades in April 2012. The running of beam in the Main Injector marks the beginning of the commissioning period for the upgraded machine. Soon it will send its first particles to a few experiments to test beam delivery systems.

Congratulations to the thousand-plus people across the laboratory who contributed to reaching this milestone. This fall, Fermilab will celebrate the restart of the accelerator complex and mark the beginning of a new era of research at the laboratory.

Accelerator experts still need to integrate and commission the revamped Recycler storage ring, which will eventually pave the way to higher beam intensities in the Main Injector. Fermilab also will continue to make upgrades to the Booster over the next two to three years. This work is part of the laboratory's Proton Improvement Plan.

The Main Injector is the final stage of acceleration in the Fermilab accelerator complex. Particles begin their journey through the accelerator complex in the new RFQ proton source, then travel through the Linac, circulate through the renewed Booster and finally speed around the Main Injector. Along the way, the Linac, Booster and Main Injector provide particle beams to numerous experiments and R&D projects on the Fermilab site.

Photos of the Day

MI-30 straight section: Tevatron and NOvA eras

This photographic comparison of the MI-30 straight section shows how it looks today and and how it looked in 2008. In 2008, the laboratory used electron cooling to cool the antiprotons in the Recycler. This system was vital to the success of the last collider run. Since the lab is no longer making antiprotons, there was no need to maintain the electron cooling system, so it was removed, and the Recycler-to-Main Injector transfer line was installed in its place. In the NOvA era, the Recycler will be used to receive and store protons for about three quarters of a second for the purpose of slip-stacking and transferring into the Main Injector. This arrangement is what will allow the Main Injector complex to eventually deliver 700 kilowatts of beam power to the NuMI target for NOvA operation. Photos: Marty Murphy, AD
From LC NewsLine

Hydrides: the nemesis of high-quality SRF cavities?

Fermilab researchers make headway toward improving SRF cavities by understanding more about how hydrides may limit their quality factors. Photos: Fedor Barkov; Video: Julianne Wyrick

Hydrogen has long been known as a possible enemy of superconducting radiofrequency (SRF) cavities—like those needed for the ILC—because of its potential to form non-superconducting hydrides that limit cavity quality factor (Q) and gradient. Researchers at Fermilab have made further progress in understanding the full physics behind hydrogen involvement, which is an important step towards improvements in cavity processing.

Hydrogen in the walls of niobium SRF cavities can bond to the niobium, forming compounds called hydrides that cause a known quality factor-limiting—and menacing-sounding—condition: hydrogen Q disease. While baking the cavities at the right temperatures was successfully used to "cure" the Q disease, scientists have never understood the full details of hydride formation. Over the past two years, Fermilab researchers Alex Romanenko and Fedor Barkov have developed a technique for directly observing how hydrides form. This technique allowed them to model another hydride-related limitation called high-field Q slope, and simultaneous experiments shed light on how this condition is "cured" by a different bake.

Read more

Julianne Wyrick

In the News

Giant magnet arrives at Batavia's Fermilab

From the Chicago Tribune, July 30, 2013

Thousands of interested gawkers turned out last week to welcome a giant circular magnet, which had traveled more than 3,200 miles by land and sea to its new home at Fermi National Accelerator Laboratory in Batavia.

It'll take years for scientists to set up the delicate structure—which one scientist likened to a "50-foot Swiss watch" — to study muons, particles that last just 2.2 millionths of a second. The scientists hope to discover new subatomic particles.

Read more


Greater than the sum of its parts: university computing in high-energy physics

The University of Maryland is just one of the many universities that contributes computing resources to particle physics and other research at Fermilab. Photo: John Consoli/University of Maryland

Editor's note: This is the first in a series of occasional articles on computing contributions made by Fermilab's user universities.

Building on Fermilab Today's University Profiles, the Computing Sector followed up with the 2012 university participants to inquire further about the roles their computing departments play in particle physics research programs. This article, the first in a series, focuses on eight randomly selected universities who responded to our questions.

A survey of this kind naturally invites comparisons; however, the responses were unified in indicating the importance of collective effort from different university computing departments in the various experiment collaborations. Without exception, each university that responded contributes software and local computing resources used by remote experimenters. The software is predominantly for CMS, although respondents also mentioned ATLAS, BESIII (at IHEP in China), CDMS, DZero, MINOS, NOvA and theoretical studies. In terms of computing resources, the majority of universities in this set are members of the Open Science Grid, and most are CMS Tier-3s. It is this great collaborative effort—supplying intellectual energy as new software and meting out experiments' operational needs as local computing—that makes experiments like CMS possible and illustrates the critical role each computing department plays.

Nevertheless, responses show that each institution is also proud of what sets its computing apart. Some concentrated on computing resources. Tulika Bose from Boston University highlighted being a Tier-2 site as giving "access to the very best in network and bandwidth capabilities." Hector Mendez from the University of Puerto Rico, the only CMS computing facility in the Caribbean, emphasized its provision of "crucial resources for our physics analyses and a way to overcome the bandwidth restrictions we have." Marguerite Tonjes at the University of Maryland noted it was "one of the early small CMS Tier-3s that extensively documented the setup and configuration of its site." Finally, Gregory Pawloski from the University of Minnesota stated it "operates the largest dedicated computing facility for BESIII outside of the host laboratory."

Others highlighted the institutes they are home to. Todd Adams from Florida State University identified the Supercomputer Computations Research Institute, "well-known for its work in supercomputer applications and science research." Richard Cavanaugh from the University of Illinois at Chicago mentioned its Electronics Visualization Laboratory, which, since 2009, has been developing CAVE2, "the next-generation virtual reality environment."

Finally, some specified projects. Avto Kharchilava, Ia Iashvili and Salvatore Rappoccio drew attention to the State University of New York at Buffalo's "Research Highlights," which includes "building a computer that can understand images as well as a human." Sridhara Rao Dasu from the University of Wisconsin added that its campus grid, GLOW, "has fostered the growth of a very active community of researchers hooked on high-throughput computing."

The strengths of all these universities, which independently take on the challenges of computing in high-energy physics, are incredibly powerful when channeled into experiment collaborations; the end result is greater than the sum of its parts.

Clementine Jones, member of the Computing Sector Communications Group

Safety Update

ESH&Q weekly report, July 30

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

A contractor was stung on the right thigh and both hands. The case is not recordable.

Find the full report here.


NALWO tour to Garfield Farm - today

What's Your Financial IQ Challenge runs from July 1 - 31

July EAP webinar

Batavia Road entrance closed until Aug. 1 or 2

Asphalt work on Batavia Rd. from Eola to east gate through Aug. 1 or 2

C2ST presents The Physics of Baseball - Aug. 2

Fermilab Heartland Blood Drive - Aug. 12 and 13

UChicago Tuition Remission program deadline - Aug. 22

URA Visiting Scholars program deadline - Aug. 26

Puppet Fundamentals course offered in September

Poster contest for the CMS experiment

Same-sex couples now eligible for immigration benefits

Outdoor soccer at the Village

Scottish country dancing meets Tuesday evenings in Auditorium

Chicago Fire discount tickets

Fermilab discount at Don's Auto Ade Inc.

Bristol Renaissance Faire discount