Recent progress of avalanche photodiodes in high-resolution X-rays and Gamma-rays detection Export

@misc{citeulike:2615833, 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 Gamma-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 5.9 keV X-rays, and obtain the energy threshold as low as 0.5 keV measured at -20deg. Thanks to its fast timing response, signal carriers in the APD device are collected within a short time interval of 1.9 nsec (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 9.4+-0.3 \% and 4.9+-0.2 \% were obtained for 59.5 keV and 662 keV Gamma-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 Gamma-ray imaging detector in future space research and nuclear medicine.}, archivePrefix = {arXiv}, author = {Kataoka, J. and Saito, T. and Kuramoto, Y. and Ikagawa, T. and Yatsu, Y. and Kotoku, J. and Arimoto, M. and Kawai, N. and Ishikawa, Y. and Kawabata, N.}, citeulike-article-id = {2615833}, citeulike-linkout-0 = {http://arxiv.org/abs/astro-ph/0602391}, citeulike-linkout-1 = {http://arxiv.org/pdf/astro-ph/0602391}, eprint = {astro-ph/0602391}, keywords = {apd, area, characterization, high, large, properties, resolution}, month = {Feb}, posted-at = {2008-03-31 11:51:07}, priority = {2}, title = {Recent progress of avalanche photodiodes in high-resolution X-rays and Gamma-rays detection}, url = {http://arxiv.org/abs/astro-ph/0602391}, year = {2006} }

TY - ELEC ID - citeulike:2615833 L3 - citeulike-article-id:2615833 N2 - We have studied the performance of large area avalanche photodiodes (APDs) recently developed by Hamamatsu Photonics K.K, in high-resolution X-rays and Gamma-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 5.9 keV X-rays, and obtain the energy threshold as low as 0.5 keV measured at -20deg. Thanks to its fast timing response, signal carriers in the APD device are collected within a short time interval of 1.9 nsec (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 9.4+-0.3 % and 4.9+-0.2 % were obtained for 59.5 keV and 662 keV Gamma-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 Gamma-ray imaging detector in future space research and nuclear medicine. TI - Recent progress of avalanche photodiodes in high-resolution X-rays and Gamma-rays detection KW - apd KW - area KW - characterization KW - high KW - large KW - properties KW - resolution AU - Kataoka, J AU - Saito, T AU - Kuramoto, Y AU - Ikagawa, T AU - Yatsu, Y AU - Kotoku, J AU - Arimoto, M AU - Kawai, N AU - Ishikawa, Y AU - Kawabata, N PY - 2006/Feb/17/ UR - http://arxiv.org/abs/astro-ph/0602391 ER -