Effects of Damage Caused by Non-ionizing Energy Loss in Si Mini-Pad Sensors for the PHENIX MPC-EX
- 주제(키워드) Si Mini-Pad , W/Si pre-shower , Non-ionizing energy loss , Damage to bulk
- 발행기관 KOREAN PHYSICAL SOC
- 발행년도 2014
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000114289
- 본문언어 영어
- Published As http://dx.doi.org/10.3938/jkps.65.1809
초록/요약
The PHENIX MPC-EX is an W/Si pre-shower detector operating at small angles with respect to the beam in the Relativistic Heavy Ion Collider (RHIC). The Si Mini-Pad sensors are the active element of the detector. The expected hadron flux to the Si Mini-Pad sensors will generate significant non-ionizing energy loss in the sensors, which may damage the crystalline structure of the sensor's bulk material. We investigated the nature of the hadron flux to the Si Mini-Pad sensors through a full simulation and determined its effect on the sensor's characteristics based on a beam test. The investigation showed key issues in designing a preshower detector using silicon sensors and operating under a large neutron fluence and offered valuable information on the operation of the MPC-EX detector.
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