Friday, May 11, 2012

Have a safe day!

Friday, May 11
10:30 a.m.
Research Techniques Seminar - Curia II
Speaker: Massimo Cataldo Mazzillo, STMicroelectronics
Title: Highly Efficient Solid-State Optical Detectors for Healthcare Applications
2 p.m.
LHC Physics Center Topic of the Week Seminar - Sunrise
Speaker: Antonio Boevia, University of Chicago
Title: New Ways of Searching for New Physics at the LHC
3:30 p.m.
4 p.m.
Joint Experiment-Theoretical Physics Seminar - One West
Speaker: Carlo Dallapiccola, University of Massachusetts
Title: Searches for Beyond the Standard Model Physics at ATLAS

Saturday, May 12
8 p.m.
Fermilab Arts Series - Ramsey Auditorium
James Sewell Ballet

Monday, May 14
2:30 p.m.
Particle Astrophysics Seminar - One West
Speaker: Tommaso Treu, University of California, Santa Barbara
Title: Measuring Dark Energy and Dark Matter with Strong Gravitational Lensing
3 p.m.
LHC Physics Center Topic of the Week Seminar - Sunrise
Speaker: Sanjay Padhi, University of California, San Diego
Title: Probing New Physics Using Same Sign Dileptons
3:30 p.m.
5 p.m.
Budker Seminar - Users' Center
Speaker: Denise Ford, Northwestern University
Title: First Principles Materials Science Investigations of Niobium Superconducting Radio-Frequency Cavities

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

Upcoming conferences


Take Five

Weather Mostly sunny

Extended Forecast
Weather at Fermilab

Current Security Status

Secon Level 3

Current Flag Status

Flags at full-mast

Wilson Hall Cafe

Friday, May 11

- Breakfast: Chorizo burrito
- New England clam chowder
- Carolina burger
- Tuna casserole
- Dijon meatballs over noodles
- Bistro chicken & provolone panini
- Assorted sliced pizza
- *Brazilian beef w/ chimichurri

*Carb-restricted alternative

Wilson Hall Cafe Menu
Chez Leon

Friday, May 11
Guest chef: David Cathey
- Field greens w/ Mississippi caviar
- Barbecue ribs (Dave's Secret Sauce)
- Baked potato
- Baked beans
- Fruit kabobs w/ cinnamon yogurt sauce

Wednesday, May 16
- Chopped shrimp Waldorf salad
- Strawberry cheesecake

Chez Leon Menu
Call x3524 to make your reservation.


Fermilab Today

Director's Corner

Result of the Week

Safety Tip of the Week

CMS Result of the Month

User University Profiles

Related Content


Fermilab Today
is online at:

Send comments and suggestions to:

Visit the Fermilab
home page

Unsubscribe from Fermilab Today


Four Fermilab-affiliated researchers receive prestigious DOE awards

Three Fermilab researchers and one user working on Fermilab experiments were selected to receive the DOE Early Career Research Award, a prestigious financial award given to the most promising researchers in the early stages of their careers.

This year, 68 researchers were selected from a pool of about 850 university- and national laboratory-based applicants. Among the recipients were:

  • Brendan Casey, Fermilab physicist: "Tracking for the New Muon g-2 Experiment"
  • Tengming Shen, Fermilab physicist: "Engineering High Field Superconducting Materials for Frontier Accelerator Technology"
  • Geralyn "Sam" Zeller, Fermilab physicist: "Understanding Liquid Argon Neutrino Detectors: Moving from Art to Science"
  • Pavel Snopok, Illinois Institute of Technology: "Advanced Simulation Tools for Muon-Based Accelerators"

According to the DOE news story, the five-year awards are "designed to bolster the nation's scientific workforce by providing support to exceptional researchers during the crucial early years, when many scientists do their most formative work."

The funding received through the awards will be used by recipients to carry out the research detailed in their respective proposals (see abstract proposals for all recipients online).

Profiles on the individuals and their research will run in Fermilab Today in the next few weeks.

Special Announcement

In recognition of 30 years of laboratory service

The Service Wall that recognizes employees with 30 years of Fermilab service has been updated with the names of 26 additional honorees who achieved this service milestone since the 2011 wall dedication. Employees are invited to view the updated wall and congratulate the honorees. The wall is located on the 15th floor of Wilson Hall.

From symmetry

Explain it in 60 seconds:
The muon

Meet the Twinkie of particle physics: the muon.

The muon is the sponge cake of elementary particles. It's plump, basic, easy to mass-produce and disappears quickly—much like a Twinkie. While the particle responsible for electricity, the electron, has been a main staple of physics experiments for a long time, scientists look to the heavier muon as a promising particle for the next batch of discoveries.

Like the electron, the muon has an electric charge and is a fundamental particle, meaning it's not made of smaller building blocks. But for reasons that still are unknown, it weighs 200 times more than the electron.

Scientists discovered the muon in the particle showers created by the cosmic rays that constantly bombard our planet. Though harmless to life, some of these muons have enough energy to penetrate the earth for hundreds of meters or more.

Unlike the electron, the muon has a lifespan of only a fraction of a second—long enough to be mass-produced in particle accelerators and neatly packaged for experiments.

Muon experiments give a peek into the most fundamental processes of the subatomic world and help scientists explore the forces that forged the early universe, in the aftermath of the big bang. The muon's large mass also makes it a candidate for a new type of particle smasher, the proposed muon collider.

Read more

—Brad Hooker

In the News

Physicists, start your searches: INSPIRE database now online

From SLAC Today, May 9, 2012

INSPIRE, the next generation of the iconic SPIRES particle-physics database, is now online and operational. It's a collaboration among four major laboratories – CERN, DESY, Fermilab and SLAC – each with specific roles to play.

For more than 40 years, physicists and researchers looking for literature in particle physics have relied on the SPIRES database developed at SLAC. The first database available on the World Wide Web and the first North American website, SPIRES provided all high-energy physics literature, both preprints and their final published versions, along with theses, reprints and conference proceedings.

The overhaul that created INSPIRE is designed with the user in mind. It offers complete reference lists for recent papers, and the references give much greater detail. Users can run full-text searches and even search figure captions extracted from articles on arXiv, the well-known Internet repository of scientific literature.

Read more

CMS Result

The consistency of quark soup

A droplet of quark-gluon fluid created from the partial collision of two lead nuclei. The droplet is taller than it is wide and expands asymmetrically.

Have you ever noticed how cooking oil flows on a hot pan? Unheated, the oil is thick and spreads slowly, but on a hot pan it splashes and almost looks like water. Physicists call this difference one of viscosity: cold oil has about ten times the viscosity of hot oil.

When lead nuclei collide in the LHC, they form an exotic fluid of quarks and gluons that flows like a liquid, except that it has no measurable viscosity.

All liquids and gases in everyday experience are made of molecules or atoms that swarm and collide with one another. The plasma in the sun is made of ions rather than whole atoms, which causes it to flow in strange and complicated ways. For a brief moment after the collision of two lead nuclei in the LHC, quarks and gluons mix as a fluid made of the smallest particles known.

To measure this fluid's viscosity, scientists use a technique similar to splashing oil on a pan to see how fast it spreads. Cold oil tends to smear out in a circle regardless of how it is thrown, but hot oil splatters in the direction that has the greatest initial difference in pressure. Similarly, a quark-gluon fluid with initial pressure differences would spread out in a circle if it were viscous, but not if it were runny.

The droplet of quark-gluon fluid has these pressure differences because of the way that it is made. Most nuclei don't collide head-on, but are a little bit offset when they hit each other. The collision takes a bite out of each nucleus as it flies by, and the part that collides and liquefies is shaped like the overlap region: taller than it is wide (see figure). This asymmetry causes the drop to burst outward on each side more than top-to-bottom.

In a recent paper, CMS scientists measured the shape of the flow of the quark-gluon fluid. It acts like a cohesive liquid, but one with zero or nearly zero viscosity. Superfluids such as helium have this strange property when they are cooled to nearly absolute zero, but the droplet of quark soup is hundreds of thousands of times hotter than the center of the sun, the temperature of the first microsecond of the Big Bang.

Jim Pivarski

The above U.S. physicists, as part of an international collaboration, performed this measurement of quark soup.
The Trigger Performance Group is responsible for real-time, weekly and long-term monitoring of the CMS trigger, to assist with trigger planning and development. The above physicists contribute to that effort.

Latest Announcements

Budker seminar

Fermilab Arts Series: James Sewell Ballet - May 12

Barn dance - May 13

Sexual harassment training for FNAL managers and supervisors course - May 15

Introduction to LabVIEW class - May 15

DreamWeaver CS5: Intro class - June 19-20

DASTOW - June 20

Intermediate/advanced Python programming class - June 20-22

Swim lessons for adults, youth & preschoolers

Scottish country dancing meets Tuesday evenings in Kuhn Village Barn

Martial arts classes

Fermilab Family Outdoor Fair

Six Flags Great America discounts

Mac users: Software update procedures changed

Employee offer at Pockets

2012 standard mileage reimbursement rate offers Mother's Day discount

Dragon II restaurant employee discount

Changarro restaurant offers 15 percent discount to employees

International folk dancing meets Thursday evenings in Kuhn Village barn

Indoor soccer

Atrium construction updates

Security, Privacy, Legal  |  Use of Cookies