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An active gain-control system for Avalanche photo-diodes under moderate temperature variations
- Source :
-
Nuclear Instruments & Methods in Physics Research Section A . Aug2006, Vol. 564 Issue 1, p300-307. 8p. - Publication Year :
- 2006
-
Abstract
- Abstract: Avalanche photodiodes (APDs) are a promising light sensor for various fields of experimental physics. It has been argued, however, that variation of APD gain with temperature could be a serious problem preventing APDs from replacing traditional photomultiplier tubes (PMTs) in some applications. Here we develop an active gain-control system to keep the APD gain stable under moderate temperature variations. As a performance demonstration of the proposed system, we have tested the response of a scintillation photon detector consisting of a reverse-type APD optically coupled with a CsI(Tl) crystal. We show that the APD gain was successfully controlled under a temperature variation of , within a time-cycle of 6000s. The best FWHM energy resolution of was obtained for 662keV -rays, and the energy threshold was as low as 6.5keV, by integrating data from – cycles. The corresponding values for – cycles were and 5.2keV, respectively. These results are comparable, or only slightly worse than that obtained at a fixed temperature. Our results suggest new potential uses for APDs in various space researches and nuclear physics. As examples, we briefly introduce the NeXT and Cute-1.7 satellite missions that will carry the APDs as scientific instruments for the first time. [Copyright &y& Elsevier]
- Subjects :
- *DIODES
*DETECTORS
*NUCLEAR physics
*PHYSICAL sciences
Subjects
Details
- Language :
- English
- ISSN :
- 01689002
- Volume :
- 564
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Nuclear Instruments & Methods in Physics Research Section A
- Publication Type :
- Academic Journal
- Accession number :
- 21695199
- Full Text :
- https://doi.org/10.1016/j.nima.2006.03.033