Fermilab Today Monday, June 14, 2010

Have a safe day!

Monday, June 14
2 p.m.
Joint Experimental-Theoretical Physics Seminar (NOTE DATE & TIME) - One West
Speaker: Zarko Pavlovic, Los Alamos National Laboratory
Title: New Antineutrino Oscillation Results from MiniBooNE
Speaker: Alex Himmel, California Institute of Technology
Title: New Results from MINOS
3:30 p.m.
4 p.m.
All Experimenters' Meeting - Curia II

Tuesday, June 15
12 p.m.
Summer Lecture Series - One West
Speaker: Arden Warner, Fermilab
Title: Accelerators
3:30 p.m.

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Wilson Hall Cafe

Monday, June 14
- Breakfast: Croissant sandwich
- *Potato leek soup
- Monte cristo
- *1/2 roasted chicken
- Alfredo tortellini
- Chicken ranch wrapper
- Assorted slice pizza
- Szechuan style pork lo mein

Wilson Hall Cafe Menu

Chez Leon
Wednesday, June 16
- Spicy sausage & cheese stuffed portobello mushroom
- Baby greens w/mango & marinated onions
- Fruit tart

Thursday, June 17
- Mandarin orange salad
- Grilled swordfish
- Parsley potatoes
- Chive green beans
- Lemon Napoleon

Chez Leon Menu
Call x3524 to make your reservation.


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Fermilab Press Release

New measurements from Fermilab's MINOS experiment suggest a difference in a key property of neutrinos and antineutrinos

MINOS announced today the world's most precise measurement to date of the parameters that govern antineutrino oscillations. The collaboration's antineutrino results are shown in red and the neutrino results in blue.

Batavia, Ill. - Scientists of the MINOS experiment at the Department of Energy's Fermi National Accelerator laboratory today (June 14) announced the world's most precise measurement to date of the parameters that govern antineutrino oscillations, the back-and-forth transformations of antineutrinos from one type to another. This result provides information about the difference in mass between different antineutrino types. The measurement showed an unexpected variance in the values for neutrinos and antineutrinos. This mass difference parameter, called Δm2 ("delta m squared"), is smaller by approximately 40 percent for neutrinos than for antineutrinos.

However, there is a still a five percent probability that Δm2 is actually the same for neutrinos and antineutrinos. With such a level of uncertainty, MINOS physicists need more data and analysis to know for certain if the variance is real.

Neutrinos and antineutrinos behave differently in many respects, but the MINOS results, presented today at the Neutrino 2010 conference in Athens, Greece, and in a seminar at Fermilab, are the first observation of a potential fundamental difference that established physical theory could not explain.

"Everything we know up to now about neutrinos would tell you that our measured mass difference parameters should be very similar for neutrinos and antineutrinos," said MINOS co-spokesperson Rob Plunkett. "If this result holds up, it would signal a fundamentally new property of the neutrino-antineutrino system. The implications of this difference for the physics of the universe would be profound."

Read more


Users' Meeting presents plans, proposals for future

The Main Injector accelerator at Fermilab produces the world's highest-intensity neutrino beam. Scientists plan to send the beam to the proposed DUSEL laboratory in South Dakota.

Fermilab has R&D underway for several future experiments across all frontiers of high-energy physics. The Fermilab Users' Meeting gave collaborators a chance to catch up on the planned and proposed experiments' progress.

"Fermilab is heavily invested in the Intensity Frontier, and we expect that investment to grow," said Andre de Gouvea of Northwestern University.

Fermilab plans to begin its second Extreme Beams lecture series in September, this time focusing on detector conceptual designs for precision measurements, rare decays and neutrino physics.

The Long Baseline Neutrino Experiment received CD-0 in January and is working toward CD-1 approval of the conceptual design and preliminary costs and schedule in 2011. Construction could start in 2014-15 and finish by 2020.

"The CD-0 has put Fermilab firmly in the driver's seat, and LBNE is heading up the on ramp for this project," said Robert Wilson of Colorado State University.

LBNE collaborators are working on a physics report for fall to guide the detector configuration and choices of the far detector scintillate. A CD-1 review of the conceptual design and preliminary costs and schedule could occur as early as December.

At the Energy Frontier, R&D on a proposed Muon Collider has been steadily making progress.

Read more

--Tona Kunz

In the News

Discrete space, general relativity, dark matter and the Casimir effect

From 13.7, an NPR blog on cosmos and culture, June 10, 2010

In an earlier blog, Marcelo discussed Dark Matter and stated that, with the exception of hopes of exotic particles called WIMPs, (Weakly Interacting massive particles) which have not been found, we have no idea what Dark Matter might be.

Fools rush in where physicists, no doubt wisely, do not tread. That said, I wish to propose concepts that may prove helpful with the issue of Dark Matter, relate to the hypothesis of discrete space on the Planck length scale that I discussed two blogs ago, seem to have potential relevance to General Relativity and perhaps quantum gravity, and appear to be testable now using the Casimir effect. I shall predict that the strength of the Casimir effect is weaker in a local gravitational field exactly in the proportion that General Relativity shows that space-time curves locally in a gravitational field.

Read more

ES&H Tips of the Week - Health Safety

Aspirin can help keeps hearts healthy

Aspirin can help prevent heart attacks.

If you want to prevent heart attacks, one of the simplest things you can do is to take aspirin.

Some of the most convincing evidence for aspirin's benefit in preventing heart attacks comes from the Physician's Health Study 1982-1995, which demonstrated a 44 percent reduction in heart attack frequency in patients who took aspirin regularly.

The American Heart Association recommends the equivalent of a baby aspirin daily for prevention of a heart attack. This works to limit the number of extra platelets attracted to plaque in the blood stream, stopping the formation of dangerous clots.

Even blood vessels that are relatively free flowing may contain dangerous plaque. If plaque breaks off and floats in the arteries, it sets up a domino effect. Once in the blood flow, plaque hails platelets like a pedestrian hailing a taxi on a street curb. Soon the scene resembles Broadway as a crowd exits a play. The platelets arrive and summon more platelets. Soon you have a clump of platelets and the tiny fibers that bind them together. A big enough clump can block a blood vessel or float down-stream and lodge where the vessel branches off and narrows. This blockage can cause a heart attack.

Aspirin provides an anti-clotting effect for four to seven days. Other non steroidal anti-inflammatory drugs, or NSAIDs such as Ibuprofen and Naproxen, only temporarily have an anti-clotting effect. For some NSAIDs, this effect is as short as a few hours and can interfere with a natural clot-busting factor. Aspirin's anti-clotting effect, however, far outweighs its inhibition of the natural clot-busting mechanism.

The U.S. Food and Drug Administration has specific recommendations for those wishing to take aspirin while on another NSAID.

The bottom line is that aspirin can be quite effective in warding off heart attacks. As with all medications, it comes down to risk versus benefit. Please check with your doctor about taking aspirin for the prevention of a heart attack.

-- Brian Svazas, MD

Safety Tip of the Week Archive

Special Announcement

West Wilson Hall parking lot repairs begin Tuesday

Pavement repairs to the Wilson Hall west parking lot will begin Tuesday, June 15. Roads and Grounds staff expect that the work will take two to three days.

Repair operations will block some parking areas, so some employees may need to use the Lederman Science Center lot for overflow parking. Temporary overflow parking signs will guide drivers. Traffic in the west lot may also be delayed at times by flaggers.

Inclement weather could affect the repair schedule next week. Please watch Fermilab Today for further updates.

Accelerator Update

June 9-11

- Three stores provided ~30.75 hours of luminosity
- T-977 conducted detector work
- BRF10 power amplifier replaced
- Antiproton Source studies

Read the Current Accelerator Update
Read the Early Bird Report
View the Tevatron Luminosity Charts


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