University of Maryland
Computer & Space Science Building, Room 2400
4:30 PM Monday, 20 November
Coffee, Tea & Cookies 4:00-4:30 PM
MooHyun Lee
IPST, University of Maryland
Performance of the CREAM calorimeter
The Cosmic Ray Energetics And Mass (CREAM) balloon-borne experiment was designed to directly measure cosmic-ray particle spectra of single elements from hydrogen to iron in the energy range from ~1011 to ~1015 eV. CREAM had two successful flights, launched in Antarctica on December 2004 and December 2005, with a combined duration of 70 days and a total of about 67 million science events collected. Energies of incoming cosmic-ray particles were measured using a sampling tungsten/scintillating fiber calorimeter. The CREAM calorimeter is comprised of 20 layers of tungsten, each 1 radiation length (X0) thick, interleaved with 20 active layers, each made up of fifty 1 cm wide scintillating fiber ribbons. Performance of the calorimeter in various tests carried out during the construction and in flights will be presented.
Sponsored by: Department of Physics
and the Institute for Physical Science and Technology, University of Maryland. For information
call John Paquette at (301) 405-6237 or go to the UMD Space Physics group seminar web site.
For free parking please park in lot DD or anywhere on levels 1-2 in lot B (the big parking garage) after 4:00 pm.
Make sure that you park in a spot WITHOUT a parking meter. More parking information is at the seminar website.