Title of article
Response of CMS avalanche photo-diodes to low energy neutrons
Author/Authors
Brown، نويسنده , , R.M. and Deiters، نويسنده , , K. T. Ingram، نويسنده , , Q. and Renker، نويسنده , , D.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2012
Pages
4
From page
146
To page
149
Abstract
The response of the Avalanche Photo-diodes (APDs) installed in the CMS detector at the LHC to neutrons from 241AmBe and 252Cf sources is reported. Signals in size equivalent to those of up to 106 photo-electrons with the nominal APD gain are observed. Measurements with an APD with the protective epoxy coating removed and with the source placed behind the APD show that there is an important response due to recoil protons from neutron interactions with the hydrogen in the epoxy, in addition to signals from neutron interactions with the silicon of the diode. The effective gain of these signals is much smaller than the diodeʹs nominal gain.
Keywords
Calorimetry , Response to neutrons , Photosensors , Silicon avalanche photodiodes
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2012
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2206584
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