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Recent progress of avalanche photodiodes in high-resolution X-rays and -rays detection
- Source :
-
Nuclear Instruments & Methods in Physics Research Section A . Apr2005, Vol. 541 Issue 1/2, p398-404. 7p. - Publication Year :
- 2005
-
Abstract
- Abstract: We have studied the performance of large area avalanche photodiodes (APDs) recently developed by Hamamatsu Photonics K.K, in high-resolution X-rays and -rays detections. We show that reach-through APD can be an excellent soft X-ray detector operating at room temperature or moderately cooled environment. We obtain the best energy resolution ever achieved with APDs, 6.4% for 5.9keV X-rays, and obtain the energy threshold as low as 0.5keV measured at . Thanks to its fast timing response, signal carriers in the APD device are collected within a short time interval of 1.9ns (FWHM). This type of APDs can therefore be used as a low-energy, high-counting particle monitor onboard the forthcoming Pico-satellite Cute1.7. As a scintillation photon detector, reverse-type APDs have a good advantage of reducing the dark noise significantly. The best FWHM energy resolutions of and were obtained for 59.5 and 662keV -rays, respectively, as measured with a CsI(Tl) crystal. Combination of APDs with various other scintillators (BGO, GSO, and YAP) also showed better results than that obtained with a photomultiplier tube (PMT). These results suggest that APD could be a promising device for replacing traditional PMT usage in some applications. In particular 2-dim APD array, which we present in this paper, will be a promising device for a wide-band X-ray and -ray imaging detector in future space research and nuclear medicine. [Copyright &y& Elsevier]
- Subjects :
- *AVALANCHE photodiodes
*X-rays
*NUCLEAR counters
*DETECTORS
Subjects
Details
- Language :
- English
- ISSN :
- 01689002
- Volume :
- 541
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Nuclear Instruments & Methods in Physics Research Section A
- Publication Type :
- Academic Journal
- Accession number :
- 17653771
- Full Text :
- https://doi.org/10.1016/j.nima.2005.01.081