Monday, Aug. 27, 2012

Have a safe day!

Monday, Aug. 27


3:30 p.m.


Tuesday, Aug. 28

3:30 p.m.


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Wilson Hall Cafe

Monday, Aug. 27

- Breakfast: pancake sandwich
- Italian minestrone
- Philly chicken sandwich
- Spaghetti and meatballs
- Smart cuisine: herbed pot roast with vegetables
- Garden beef wrap
- Breakfast pizza
- Creole jambalaya

Wilson Hall Cafe Menu

Chez Leon

Wednesday, Aug. 29
- Stuffed bacon-wrapped chicken breast stuffed with mushroom, cheese, onion and garlic
- Parmesan orzo
- Lemon cheesecake with blueberry sauce

Friday, Aug. 31

Chez Leon Menu
Call x3524 to make your reservation.


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RFQ system to take Fermilab into the Intensity Frontier

Alluding to a quote from Winston Churchill, Fermilab scientist C.Y. Tan made this drawing of the new RFQ in April as a way to rally his Proton Source Department colleagues in the run-up to the device's commissioning.

On Wednesday morning, employees from across Fermilab assembled in the Linac Gallery to observe the decommissioning of the Cockcroft-Walton generators, which provided beam to the lab's accelerators for 40 years. At the beginning of September, members of the Proton Source Department will begin installing the Cockcroft-Waltons' replacement, the radio-frequency quadrupole system.

The RFQ system will perform the same function as the Cockcroft-Walton generators but in a much smaller space and with fewer parts. Whereas the generators needed two massive rooms to operate, the RFQ is only about 3.5 meters long. In that space, it will ramp up the energy of hydrogen ions to 750 keV for entrance into the Linac, just as the Cockcroft-Walton generators did.

"With the RFQ, we'll have better beam quality to start with so there are fewer losses down the line," said AD operations specialist Pat Karns, who is writing his master's thesis on the installation and commissioning of the RFQ.

Previously, beam started from two sources – one in each Cockcroft-Walton generator – and had to be bent to maneuver the particles into the buncher cavity ahead of the Linac. This caused a loss of a significant portion of the beam and meant that the bunching – or clustering of hydrogen ions within the beam – was inconsistent.

"The RFQ will do the acceleration and bunching in one device, preserving the bunching," said Bill Pellico, who leads the Proton Improvement Plan team. The beam's small cross section will help provide more intense and reliable beam for Intensity Frontier experiments such as Mu2e, NOvA and Project X.

The PIP team looked to Brookhaven National Laboratory's RFQ system for inspiration. AD scientist C.Y. Tan, who led the design effort, based the Fermilab design on the BNL design, adding several unique features. One of them is the use of an Einzel lens as a beam chopper, designed by retired scientist Jim Lackey. This system uses solid-state switches to pulse a voltage across the lens. At high enough voltage, the lens will not allow beam into the RFQ, but at lower voltage, the beam is transmitted. Another feature is a sliding rail, designed by engineer Kevin Duel. The rail allows the two hydrogen ion beam sources, designed by source expert Dan Bollinger, to be switched if one degrades, which happens every three to nine months.

Tan also added that, in general, the RFQ system would be more accessible for repairs than the Cockcroft-Walton generators were.

The PIP team has been preparing the RFQ for installation for several months. In early September, the Linac Gallery will start to undergo a series of modifications for the installation process, which is due to be complete in November. The beam will need to be running in December for the Neutron Therapy Facility, said Tan.

Karns said that system tuning will continue until the end of shutdown in March 2013. He was enthusiastic about the future of the RFQ.

"It's a more modern system," he said. "Hopefully we'll get to be the experts on it for the next 20 years."

Joseph Piergrossi

In Brief

Printer assessment begins today

The Computing Sector is developing plans to save trees and money by reducing our printing, copying and associated costs. The first step is to have our managed-services partner, Dell, conduct a lab-wide assessment of our current printing environment and needs. All on-site printers and printer-copiers will be part of the assessment. The contractors conducting the assessment will begin in Wilson Hall today and will then move to other sites at the laboratory. All site visits should be complete in September.

As part of the assessment, the contractors will check each printer's configuration, write down any necessary information and may print a page using the device. They will then tag each printer with a green dot. Each assessment will typically take between two and five minutes. The contractors will have Fermilab ID badges.

Printers residing in non-communal areas are also part of the assessment. Contractors are arranging access to office-area printers or printer-copiers with each division and section. Contact the Fermilab Service Desk at x2345 or on the web with questions about the printer assessment.

In the News

Nuclear decelerator: last U.S. particle collider on chopping block

From Scientific American, Aug. 24, 2012

Until recently, the American particle collider was a thriving species spanning a variety of habitats from coast to coast. But now it finds itself on the endangered list.

Since 2008 the number of colliders in the U.S. has dwindled from four to one. And the last surviving member of the species, the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory in Upton, N.Y., may soon fall victim to the same budgetary blight that has already felled so many other towering scientific facilities. Just last year the U.S. Department of Energy (DoE) phased out the larger Tevatron collider at Fermilab in Illinois, citing fiscal constraints. The increasingly rare breed known as the collider is a particle accelerator in which two beams of high-energy particles intersect to collide head-on inside giant detectors, which allow physicists to sift through the wreckage for short-lived particles or evidence of new physical phenomena.

Read more

Tip of the Week:

Eat, drink and be healthy

As you enjoy your fall picnics, be sure your food and drink are safe. Photo: Cindy Arnold

It's late summer and our thoughts turn toward Labor Day, cooler weather and perhaps enjoying the fall days with a picnic. Here are some food safety tips that are good for any time of year.

Cloth grocery bags, though earth-friendly, may harbor some health risks if not taken care of properly. Two years ago, a mystery illness later discovered to be Norovirus sickened an Oregon soccer team. The link was a cloth grocery bag that unfortunately served as a transport medium for the virus. A combined University of Arizona and Loma Linda investigation demonstrated both viruses and bacteria can thrive on used cloth grocery bags. (Disclosure: There was American Chemistry Council funding behind this later study.) The study's take-home points are worthwhile:

  • Have dedicated bags, one for items like meat and others for fruits and vegetables.
  • Launder or wipe down the bag regularly.
  • Don't let your grocery bag double as your book or gym bag.
  • Don't leave your grocery bags in the trunk of your car in the summer. They make great incubators there, even when the bags are empty.

The U.S. Department of Agriculture has collected some of the latest wisdom on food safety and made it available. Here is some of the department's advice:

  • Shop for non-perishables first and frozen goods last.
  • Wrap perishable foods securely.
  • Sanitize countertops, cutting boards and utensils.

Also be aware of ways to prevent against salmonella, which is present in many foods. According to the Center For Disease Control, "Although foodborne infections have decreased by nearly one-fourth in the past 15 years, more than 1 million people in this country become ill from Salmonella each year, and Salmonella accounts for about half of the hospitalizations and deaths among the nine foodborne illnesses CDC tracks through FoodNet."

Eggs are a good source of nutrition. Unfortunately, they can also be a source of salmonella, so effective storage and preparation are key to preventing illness:

  • Fresh eggs in the shell can be refrigerated for three to five weeks. Do not freeze them.
  • Raw yolks and whites can be refrigerated for two to four days. They can be stored in a freezer for up to one year.
  • Hard-cooked eggs can be refrigerated for up to one week. They do not freeze well.

The USDA site offers good advice for many other food categories.

By keeping food safety in mind from the market to the picnic table, you can enjoy outings with family and friends.

Brian Svazas, M.D., M.P.H.


New employees - August

The following full-time and long-term employees started at Fermilab in August:

David Adey, APC; Beth Dahl, BSS; Eric Korzeniowski, ESH; Laza Rakotondravohitra, PPD; Frank Schmidt, APC; William Spies, TD; Kevin True, CD.

Fermilab welcomes them to the laboratory.

In the News

41 new transiting planets in Kepler field of view

From NASA, Aug. 22, 2012

Two newly submitted studies verify 41 new transiting planets in 20 star systems. These results may increase the number of Kepler's confirmed planets by more than 50 percent: to 116 planets hosted in 67 systems, over half of which contain more than one planet. The papers are currently under scientific peer-review.

Nineteen of the newly validated planetary systems have two closely spaced transiting planets and one system has three. Five of the systems are common to both of these independent studies.

Read more


Today's New Announcements

Free Weight Management class - begins Sept. 6

URA Visiting Scholars Program deadline - today

Understanding Fee Disclosure Statements - Aug. 29

Scottish country dancing in Ramsey Auditorium - through Aug. 31

International Folk Dancing in Ramsey Auditorium - through August

Fermilab Arts & Lecture Series: Epigenetics - Sept. 7

Project Management Introduction class - Sept. 10-14

Fermilab Arts & Lecture Series: Broadway's Next H!T Musical - Sept. 22

Word 2010 classes scheduled

Excel 2010 classes scheduled

Access 2010 classes scheduled

Fermilab Management Practices Seminar - begins Oct. 4

Interpersonal communication skills training - Nov. 14

Bowlers wanted for 2012/2013 season

Outdoor soccer - Tuesdays and Thursdays at 6 p.m.

Fermilab employee discounts

Atrium work updates