A new type of germanium (Ge) detector for dark matter searches is under development utilizing the Ge crystal growth facility recently established at the University of South Dakota. Detector-grade crystals with electric impurity levels within 1010/cm3 and neutral impurity levels within 1014/cm3 have been grown regularly in the laboratory. These crystals can be fabricated into planar detectors with 1cm in thickness and 10cm in diameter. When a high voltage is applied to one of the end planes, a uniform electric field in the volume can be established. Such a design could result in a very fast electric signal. A time resolution of 1ns is expected by combining a short drift length and large drift mobility. This may allow us to resolve the difference on the electric pulse rise-time between low-energy nuclear recoil events and electronic recoil events at liquid nitrogen temperatures. An array of 168 planar detectors of this kind was modeled in a Geant4-based Monte Carlo simulation package. Its background reduction power was investigated and its sensitivity in dark matter search is estimated to be ~10-48cm2.
| Published in |
American Journal of Modern Physics (Volume 4, Issue 1-1)
This article belongs to the Special Issue New Science Light Path on Cosmological Dark Matters |
| DOI | 10.11648/j.ajmp.s.2015040101.15 |
| Page(s) | 23-29 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2014. Published by Science Publishing Group |
Nuclear Recoil, Rise Time Difference, Crystal Growth, Dark Matter Searches
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APA Style
Wenzhao Wei, Hao Mei, Guojian Wang, Gang Yang, Chao Zhang, et al. (2014). Development of a New Type of Germanium Detector for Dark Matter Searches. American Journal of Modern Physics, 4(1-1), 23-29. https://doi.org/10.11648/j.ajmp.s.2015040101.15
ACS Style
Wenzhao Wei; Hao Mei; Guojian Wang; Gang Yang; Chao Zhang, et al. Development of a New Type of Germanium Detector for Dark Matter Searches. Am. J. Mod. Phys. 2014, 4(1-1), 23-29. doi: 10.11648/j.ajmp.s.2015040101.15
AMA Style
Wenzhao Wei, Hao Mei, Guojian Wang, Gang Yang, Chao Zhang, et al. Development of a New Type of Germanium Detector for Dark Matter Searches. Am J Mod Phys. 2014;4(1-1):23-29. doi: 10.11648/j.ajmp.s.2015040101.15
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Download@article{10.11648/j.ajmp.s.2015040101.15,
author = {Wenzhao Wei and Hao Mei and Guojian Wang and Gang Yang and Chao Zhang and Yutong Guan and Jing Liu and Dongming Mei and Christina Keller and Yiju Wang and Dahai Xu},
title = {Development of a New Type of Germanium Detector for Dark Matter Searches},
journal = {American Journal of Modern Physics},
volume = {4},
number = {1-1},
pages = {23-29},
doi = {10.11648/j.ajmp.s.2015040101.15},
url = {https://doi.org/10.11648/j.ajmp.s.2015040101.15},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmp.s.2015040101.15},
abstract = {A new type of germanium (Ge) detector for dark matter searches is under development utilizing the Ge crystal growth facility recently established at the University of South Dakota. Detector-grade crystals with electric impurity levels within 1010/cm3 and neutral impurity levels within 1014/cm3 have been grown regularly in the laboratory. These crystals can be fabricated into planar detectors with 1cm in thickness and 10cm in diameter. When a high voltage is applied to one of the end planes, a uniform electric field in the volume can be established. Such a design could result in a very fast electric signal. A time resolution of 1ns is expected by combining a short drift length and large drift mobility. This may allow us to resolve the difference on the electric pulse rise-time between low-energy nuclear recoil events and electronic recoil events at liquid nitrogen temperatures. An array of 168 planar detectors of this kind was modeled in a Geant4-based Monte Carlo simulation package. Its background reduction power was investigated and its sensitivity in dark matter search is estimated to be ~10-48cm2.},
year = {2014}
}
TY - JOUR T1 - Development of a New Type of Germanium Detector for Dark Matter Searches AU - Wenzhao Wei AU - Hao Mei AU - Guojian Wang AU - Gang Yang AU - Chao Zhang AU - Yutong Guan AU - Jing Liu AU - Dongming Mei AU - Christina Keller AU - Yiju Wang AU - Dahai Xu Y1 - 2014/12/26 PY - 2014 N1 - https://doi.org/10.11648/j.ajmp.s.2015040101.15 DO - 10.11648/j.ajmp.s.2015040101.15 T2 - American Journal of Modern Physics JF - American Journal of Modern Physics JO - American Journal of Modern Physics SP - 23 EP - 29 PB - Science Publishing Group SN - 2326-8891 UR - https://doi.org/10.11648/j.ajmp.s.2015040101.15 AB - A new type of germanium (Ge) detector for dark matter searches is under development utilizing the Ge crystal growth facility recently established at the University of South Dakota. Detector-grade crystals with electric impurity levels within 1010/cm3 and neutral impurity levels within 1014/cm3 have been grown regularly in the laboratory. These crystals can be fabricated into planar detectors with 1cm in thickness and 10cm in diameter. When a high voltage is applied to one of the end planes, a uniform electric field in the volume can be established. Such a design could result in a very fast electric signal. A time resolution of 1ns is expected by combining a short drift length and large drift mobility. This may allow us to resolve the difference on the electric pulse rise-time between low-energy nuclear recoil events and electronic recoil events at liquid nitrogen temperatures. An array of 168 planar detectors of this kind was modeled in a Geant4-based Monte Carlo simulation package. Its background reduction power was investigated and its sensitivity in dark matter search is estimated to be ~10-48cm2. VL - 4 IS - 1-1 ER -
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