Physics
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..aprs10011m&link_type=abstract
American Physical Society, April Meeting, 2004, May 1-4, 2004, Denver, Colorado April 2004, MEETING ID: APR04, abstract #S10.011
Physics
Scientific paper
The Anti-Coincidence Detector (ACD) is the outermost detector layer in the GLAST Large Area Telescope (LAT), surrounding the top and sides of the tracker. The purpose of the ACD is to detect and veto incident cosmic ray charged particles, which outnumber cosmic gamma rays by 3-5 orders of magnitude. The challenge in ACD design is that it has to have high (0.9997) detection efficiency for relativistic charged particles, but must have low sensitivity to backsplash photons. These are products of high energy interactions in the LAT calorimeter, and can cause a veto signal in the ACD resulting in degradation of the LAT efficiency for high energy (>10 GeV) gamma-rays. The ACD requirement is that backsplash shall not reduce the LAT sensitivity by more than 20% for gamma rays of 300 GeV. To solve this problem, the ACD is divided into 89 scintillating tiles, with wave-length shifting fiber readout. The detector design and its characteristics are given in this paper.
Hartman Robert C.
Johnson Thomas E.
Moiseev Alexander A.
Ormes Jonathan F.
Thompson Daniel J.
No associations
LandOfFree
Anti-Coincidence Detector for GLAST does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Anti-Coincidence Detector for GLAST, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-Coincidence Detector for GLAST will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1181033