1495268 SzGeCERN 20170524112506.0 DOI 10.1088/1748-0221/8/01/C01050 oai:cds.cern.ch:1495268 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN Inspire 1220451 CMS-CR-2012-290 eng Vichoudis, Paschalis INSPIRE-00305474 CCID-612408 CERN AUTHOR|(CDS)2070168 #BEARD# The Upgraded CMS Preshower High Voltage System 2013 Geneva CERN 31 Oct 2012 9 p In March 2012 the high voltage system of the silicon-sensor-based CMS Preshower detector underwent a significant upgrade. In order to increase the granularity of the bias distribution lines, the number of power supplies was doubled and fully configurable distribution boards were developed and installed. These new boards provide much improved flexibility in the powering, necessary to cope with the expected evolution of the 4288 silicon sensors with radiation damage. They also provide measurement of the ~2200 bias-voltage lines that go to the detector, enabling fast identification/diagnosis of any anomalous currents and providing detailed knowledge of the sensor current evolution over time. CC-BY-3.0 Publication CERN EDS SzGeCERN Detectors and Experimental Techniques INTNOTE CERN PUBLCMS ARTICLE CERN LHC CMS PH for the CMS Collaboration C01050 JINST 8 2013 http://cds.cern.ch/record/1495268/files/CR2012_290.pdf 1676409 10496174 http://cds.cern.ch/record/1495268/files/1748-0221_8_01_C01050.pdf IOP Open Access article n 201247 a2013 13 1459551 C01050 oxford20120917 PUBLIC INTNOTECMSPUBL ARTICLE ConferencePaper