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ECAL consists of ??? lead tungsten modules readout using Avalanche  Photo-diodes (APDs). There are total of ??? modules divided into upper and lower halves. ECAL APDs are powered usingusing  Mod. A1520 12 Ch Flt P 500V 15mA 60Hz from CAEN house in SY1527 or SY4527 HV chassis. The voltage parameters for these channels needs to be controlled using EPICS-based GUIs.

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