Author/Authors :
Anassontzis، نويسنده , , E.G. and Ioannou، نويسنده , , P. and Kourkoumelis، نويسنده , , C. and Vasileiadis، نويسنده , , G. and Voulgaris، نويسنده , , G. and Kappos، نويسنده , , E. Diane Beattie، نويسنده , , Michael T. and Krueger، نويسنده , , S. and Lolos، نويسنده , , G.J. and Papandreou، نويسنده , , Z. and Semenov، نويسنده , , A.Yu. and Frye، نويسنده , , J. and Leckey، نويسنده , , J. and Shepherd، نويسنده , , M.R. and Bogart، نويسنده , , T. and Lawrence، نويسنده , , D. and Smith، نويسنده , , E.S.، نويسنده ,
Abstract :
The relative gain of the photodetectors for the GlueX Barrel and Forward calorimeters will be monitored using modular LED driver systems. The BCAL system consists of a global controller that feeds power, bias voltage and trigger signals to 96 local controllers situated at the ends of the 48 BCAL modules, which drive 40 LEDs associated with the 40 light guides at the end of each module. The FCAL system consists also of a global controller, a local controller for each acrylic quadrant covering the face of the FCAL, and ten 4-LED pulser boards per local controller connected in a star configuration along the edges of the acrylic panes. The respective systems are currently being installed on the detectors and their tested performance is presented herein.
Keywords :
Gain monitoring , LED , Lead glass calorimeter , Multi photon pixel counter , Sampling calorimeter
