Gammev Experiment - Shrimp Cocktail Can Be Found At

Fermilab Today

Friday, Feb. 6, 2009

Calendar Feature Fermilab Special Result of the Week Friday, Feb. 6 GammeV: The little experiment A probe of the particle nature of 3:30 p.m. with big output DIRECTOR'S COFFEE dark energy BREAK - 2nd Flr X-Over Call them the Energizer bunny of particle 4 p.m. physics: the GammeV collaboration reins in Joint Experimental-Theoretical costs, works fast and just keeps going, and Physics Seminar - One West going … Speaker: George W.S. Hou, The collaboration of 10 people formed in April National Taiwan University, 2007 to look for candidates for dark matter Taipei and dark energy. Although several members Title: CP Violation for the work on other experiments as well, they were Heaven and the Earth drawn to GammeV’s unique attributes. Its Sunday, Feb. 8 small collaboration size allows for large individual roles in building and analysis plus a 2:30 p.m. The image shows the region excluded at the 99.5 Gallery Chamber Series - 2nd chance to search for exotic particles while exploring areas of physics often overlooked by percent confidence level by the GammeV Flr Art Gallery chameleon search. The vertical axis is the larger collaborations. Artist: Waller/Maxwell Guitar chameleon/photon coupling constant and the Duo By scrounging parts, including an AD laser, a horizontal axis is the effective chameleon mass inside the vacuum chamber. The solid blue region Tickets: $15 Tevatron dipole magnet and QuarkNet circuit is for scalar chameleons while the outline region is boards, from old experiments, the Monday, Feb. 9 for pseudoscalar chameleon particles. collaboration kept to a budget of $30,000. The 2:30 p.m. collaboration took less than a year to propose, The GammeV collaboration has wrapped up Particle Astrophysics Seminar build and publish results from its first the second component of their experimental - Curia II experiment setting new exclusion limits on suite; a test of chameleon dark energy. This is Speaker: Cyril Pitrou, the first dedicated-laboratory test of a dark- University of Oslo axion-like particles in the milli-eV mass range. energy model, and it is a test that fits on the Title: The Non-Linear Evolution The collaboration tweaked its equipment and top of a table (albeit a long, narrow one). of the Cosmic Microwave produced in less than a year another set of Background results, this time on the chameleon particle. These results, appearing in the Jan. 23 issue 3:30 p.m. (See adjacent Result of the Week) of Physical Review Letters, come on the heels DIRECTOR'S COFFEE of the GammeV search for axion-like particles. BREAK - 2nd Flr X-Over But the physicists aren’t ready to rest yet. Next That result was published in PRL last year 4 p.m. on the agenda is a possible proposal to (PRL 100 080402) and in Fermilab Today. All Experimenters' Meeting - upgrade the chameleon experiment during the Curia II next year. Once again the experiment would In the chameleon dark-energy model, the Special Topics: Chamonix LHC carry a discounted price tag by taking observed acceleration of the universe is Workshop,CDF Luminosity advantage of the old equipment with a few caused by a light, spin-zero particle that Studies internal modifications, mainly to the vacuum evades other experiments. This evasion is due pump system, and another recycled magnet. Click here for NALCAL, to the fact that the properties of the hypothetical chameleon particle---namely its a weekly calendar with The first chameleon search looked at mass---depend upon the environment, hence links to additional exclusion plots on “fringe or extreme” models the chameleon moniker. GammeV information. of chameleon particles as dark-energy collaborators exploit this effect to trap these Weather candidates. The second experiment is chameleon particles in a jar-like vacuum expected to probe exclusion plots for a much chamber. wider range of models. Sunny 38°/36° Collaborators generate chameleon particles by How will the collaboration follow that up? interacting polarized laser light with a Members hope to eventually undertake an Extended Forecast magnetic field. Some of the photons oscillate upgrade of their original axion study, but that Weather at Fermilab into chameleon particles, which pass through would require a much larger budget and the jar but bounce off of the walls of the Current Security encompass three to five years of work. vacuum chamber---including the optical Status windows at each end. When the laser is -- Tona Kunz file:///U|/wwwdocs/pub/v5_0/today/archive_2009/today09-02-06.html (1 of 4)2/6/2009 9:09:15 AM Fermilab Today

Secon Level 3 turned off, the jar empties as the chameleons Feature reconvert to detectable photons. This Wilson Hall Cafe afterglow is a telltale signature of the DOE releases laboratory report chameleon particle. Friday, Feb. 6 cards - Old fashioned ham & bean Planned alongside the axion-like particle - Philly style chicken In Fiscal Year 2006, the Office of Science search, the chameleon particle search - Chicken pot pie (SC) instituted a new process for evaluating required only a rearrangement of the - Smart cuisine: baked fish the scientific, technological, management and components of the apparatus. The GammeV over rice operational performance of the contractors scientists, including two theorists who study - Roasted veggie & provolone who run its ten national laboratories. Many chameleon cosmology, worked with the panini attributes of this new laboratory appraisal technical staff in the Particle Physics Division - Assorted sliced pizza methodology were the result of and at the Magnet Test Facility to collect the - Baked potatoes recommendations of a committee of Office of 20 hours of data needed to probe the Science senior managers who undertook an unexplored landscape of particle dark energy. Wilson Hall Cafe Menu extensive review of the strengths and Chez Leon weaknesses of the previous process. While no signal was found, the resulting limits constrain the properties of the chameleon Wednesday, Feb. 11 Read more about the grading process. particle, including its coupling to photons and Lunch its mass, for a range of chameleon dark- - Raspberry chicken View Fermilab's FY2008 laboratory energy models. Moreover, with the lessons - Spaghetti squash w/ green performance report card. learned from this experiment, the GammeV onions collaboration is designing an upgrade that will - Steamed green beans Photo of the Day probe a significantly broader range of dark- - Mocha cake energy models as well as general chameleon, Winter hawk spin-zero field models over a much larger Thursday, Feb. 12 range of the available parameter space. More Valentines Dinner information about the GammeV experiment - Shrimp cocktail can be found at http://gammev.fnal.gov. - Chateaubriand with cabernet sauvignon sauce - Crispy potato torte - Green bean & blue cheese gratin - White chocolate-raspberry - Crème brulee

Chez Leon Menu Call x3524 to make your reservation. TD's Lucy Litvinenko took this photo of a red-tailed Archives hawk in a wintery scene on Power Line Road, just Top left: Jason Steffen; Center left: Amol Upadhye; past the Road B intersection last week. Bottom left: Amanda Weltman. Left to right: Fermilab Today Jonghee Yoo, Dick Gustafson, Peter Mazur, Al Announcement Baumbaugh, Ray Tomlin, Xi Yang, Yilda Irizarry- Valle, Aaron Chou and William Wester. Result of the Week New User's Office Web site an information hub Announcement Safety Tip of the Week The User's Office proudly Wilson Hall HVAC cooling announces a new Web outage Feb. 9-13 site: http://users.fnal.gov. ILC NewsLine Testing on the HVAC ductwork on floors 1-15 The new site clearly in the northeast corner of Wilson Hall will take presents information a place from 4 p.m. to midnight on Monday, Feb. Info User might need to obtain 9 through Friday, Feb. 13. There will not be The new User's or extend a computing cooling in the building during the testing. This Office Web site account or Visitor ID will affect the entire floors of 1-15. Please badge. It also offers information about B-1 and contact John Kent, x4753 or Randy Sales, Visa Waiver visits to the U.S., and includes x8031, with any questions. links to online fillable application forms.

file:///U|/wwwdocs/pub/v5_0/today/archive_2009/today09-02-06.html (2 of 4)2/6/2009 9:09:15 AM Fermilab Today

Fermilab Today is online at: It also includes a new section, called “Alerts,” Announcements www.fnal.gov/today/ which offers short articles relating to U.S. immigration processes, laws or other topics Latest Announcements Send comments and that might be of interest to our Users. The new suggestions to: User's Office Web site is the first part of a new 2009 Standard mileage [email protected] online presence for the International Services reimbursement rate group. The second part – a new Web site for the Visa Office – will come later this year. NALWO Mardi Gras potluck dinner In the News Feb. 20

Obama announces new energy NALWO - Brown Bag Lunch Program guidelines - "Australia: Travels in the Land Down Under" - Feb. 24 From the Boston Globe, Feb. 5, 2009 English Country Dancing, March 1 President Obama announced this afternoon that he is issuing a memorandum directing the NALWO - Adler Planetarium Trip - Energy Department to come up with new March 21 guidelines to increase the efficiency of household appliances. Argentine Tango class Feb. 18 He said that over 30 years, the new guidelines would save the equivalent of the energy Have a safe day! produced by all coal-fired plants for two years. Discount tickets: Disney On Ice Obama called the changes "a significant down Presents Worlds of Fantasy payment" on a clean energy future, and promoted the alternative energy components Daycamp information and registration of his economic stimulus package. Muscle Toning classes - Feb.3 - 26 Read the full news story. Outlook 2007 New Features class Read a transcript of President Obama's Feb. 26 address. Nominations requested for job Listen to an audio recording of the address. profiles

In the News Barn Dance Feb. 8

Bringing blue-sky thinking Bulgarian Dance Workshop, Feb. 12 down to earth Barn Dance Feb. 15 From New Scientist, Feb. 4, 2009 Kyuki Do classes - Feb. 16 Physicists and cosmologists do not tend to seek justification for their expensive "Facilitating Meetings That Work" experiments by flagging up the great practical class offered Feb. 16 benefits that might result. Investigations into the origins and nature of the universe are, Fermilab Blood Drive Feb. 17 & 18 quite rightly, considered important enough on their own. Yet blue-sky research often has Discount tickets: Smucker's Stars On unexpected outcomes, and they are worth Ice - Feb. 21 celebrating. If nothing else, they can help bridge the conceptual gap between exotica Discount tickets: World's Toughest such as neutrinos and dark matter, and more Rodeo presents Toughest Cowboy - mundane concerns. Feb. 21 There are plenty of examples to choose from. Researchers at the Main Injector Neutrino Child Care program offered March 24 Oscillation Search (MINOS) experiment deep inside an old mine in Soudan, Minnesota, Conflict Management & Negotiation file:///U|/wwwdocs/pub/v5_0/today/archive_2009/today09-02-06.html (3 of 4)2/6/2009 9:09:15 AM Fermilab Today

recently announced that their detector, which Skills class offered Apr.1 is designed to look for neutrinos, those most elusive of subatomic particles, could also help Interpersonal Communication Skills with weather forecasting. It turns out that the class offered Apr. 8 number of particles known as muons picked up by the detector varies according to conditions in the upper atmosphere, which Additional Activities affect the weather lower down.