The breakdown performance of CMS barrel module prototype detectors and test devices with single and multi-guard structures were studied before and after neutron irradiation up to 2.10(14) 1 MeV equivalent neutrons. Before irradiation avalanche breakdown occurred at the guard ring implant edges. We measured 100-300 V higher breakdown voltage values for the devices with multi-guard than for devices with single-guard ring. After irradiation and type inversion the breakdown was smoother than before irradiation and the breakdown voltage value increased to 500-600 V for most of the devices. RI Krammer, Manfred/A-6508-2010; Servoli, Leonello/E-6766-2012; Azzi, Patrizia/H-5404-2012
High-voltage breakdown studies on Si microstrip detectors
ALBERGO, Sebastiano Francesco;TRICOMI, Alessia Rita;
1999-01-01
Abstract
The breakdown performance of CMS barrel module prototype detectors and test devices with single and multi-guard structures were studied before and after neutron irradiation up to 2.10(14) 1 MeV equivalent neutrons. Before irradiation avalanche breakdown occurred at the guard ring implant edges. We measured 100-300 V higher breakdown voltage values for the devices with multi-guard than for devices with single-guard ring. After irradiation and type inversion the breakdown was smoother than before irradiation and the breakdown voltage value increased to 500-600 V for most of the devices. RI Krammer, Manfred/A-6508-2010; Servoli, Leonello/E-6766-2012; Azzi, Patrizia/H-5404-2012I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.