Performance of a shower maximum detector with avalanche photodiode readout

Authors :: Itoh, S.
Takeshita, T.
Fujii, Y.
Kajino, F.
Kanzaki, J.
Kawagoe, K.
Kim, S.
Matsunaga, H.
Miyata, H.
Nagano, A.
Nakamura, R.
Ono, H.
Sanchez, A.L.C.
Source :: Nuclear Instruments & Methods in Physics Research Section A. May2008, Vol. 589 Issue 3, p370-382. 13p.
Publication Year :: 2008
Abstract: Abstract: We have constructed a shower maximum detector (SMD) using 1-cm wide scintillating strips. The SMD measures the position of electrons and photons in the electromagnetic calorimeter, and improves the separation capability. We use avalanche photodiodes (APDs) to read out the scintillation light; they are directly attached to each end of a strip so as to construct a compact detector. We operate the SMD at room temperature. This report describes the structure of the SMD and its performance as measured in beam tests for future linear collider experiments. [Copyright &y& Elsevier]