Physics – Instrumentation and Detectors
Scientific paper
2003-12-09
Physics
Instrumentation and Detectors
5 pages, to be published in Proc. ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics A
Scientific paper
We have exposed seven full length production quality crystals of the electromagnetic calorimeter (ECAL) of the CMS detector to a 20 GeV/c proton beam at the CERN PS accelerator. The exposure was done at fluxes of 10**12 p/cm**2/h and 10**13 p/cm**2/h and integral fluences of 10**12 p/cm**2 and 10**13 p/cm**2 were reached at both rates. The light transmission of the crystals was measured after irradiation and suitable cooling time for induced radioactivity to decrease to a safe level. First results of these measurements are shown. The possible damage mechanisms are discussed and simulations based on one possible model are presented. The implications for long-term operation of CMS are discussed and it is shown that in the whole barrel and at least most of the ECAL endcap hadron damage alone - even if cumulative - should not cause the crystals to fail the CMS specification of an induced absorption coefficient muIND < 1.5 /m during the first 10 years of LHC operation.
Huhtinen Mika
Lecomte P.
Luckey D.
Nessi-Tedaldi Francesca
No associations
LandOfFree
First results on radiation damage in PbWO4 crystals exposed to a 20 GeV/c proton beam 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 First results on radiation damage in PbWO4 crystals exposed to a 20 GeV/c proton beam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First results on radiation damage in PbWO4 crystals exposed to a 20 GeV/c proton beam will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-41593