Status of the PSD upgrade F Guber A

Status of the PSD upgrade F. Guber, A. Ivashkin, O. Petukhov (INR, Moscow) - - Status of production of new temperature, HV control systems MAPD gain monitoring system. Status of the PSD temperature stabilization system Nearest plans General EVO, 10 December 2013 1

Status of FEE and slow control system LED source Al-plate+ T-sensor MAPDs SC connector HV channels PCB with amplifiers and adder 10 Analog signals +trigger (adder) Successfully tested in October. Mass production is in progress. First 20 modules will be ready at the end of December. Another 30 modules – end of January 2014 2

Scheme of MAPDs temperature stabilization by Peltier element Copper heat sink PSD module electronics Temperature sensor To Al plate Ts External TEC controller Heat sink Ts -sink temperature sensor To -object temperature seensor Compressed air PELTIER COOLER

Structure of new PSD electronics in the module with Peltier cooling 60 layers Lead-scinti, ~120 cm WLS-fibers Al plate with 11 optcal connectors 10 Si. Ms HV distributor board with T sensor PCB board with electronics (Power 0. 5 W) End cover with air inlet Plastic tube from air distributor box Peltier with sink & controller Copper sink Temperature in this area should be ~22◦± 1◦ Air distributor box 4 Pumped air

TEC Controller The TEC-1091 is a specialized TEC controller / power supply able to precision-drive Peltier elements. It features a true bipolar current source for cooling /heating, two temperature monitoring inputs (1 x high precision, 1 x auxiliary) and intelligent PID control with auto tuning. The TEC-1091 is fully digitally controlled/ 2 controllers and 2 Peltier elements (30 x 30 mm 2) have been bought in November and now are testsing. 5

Some photo of new PSD electronic prototype 6

PSD upgrade plan: -December ( 2013 CERN) Test cooling system in one module with real TEC controller and Peltier. - End of January – end of February (CERN) Installation and test of the PSD electronics and cooling system for 16 central modules. - April Installation and test of the PSD electronics and cooling system for 28 outer modues. Summer 2014 the PSD test with cosmic rays. October 2014 – test/calibration of the PSD with proton (better with muon beam!) Estimated beam time ~ 3 -4 days. Martin help is needed in December –April ! 7

Cost estimate of the PSD cooling system upgrade based on the Peltier elements - Petlier elements ~ 20 Euro/pc ~ 1200 CHF - TEC controllers 50 x 180 CHF ~ 9000 CHF - Temperature sensors – 100 pc ~ 200 CHF - Power supplies -? ? - Auxiliary materials and tools ~ 1000 CHF - Total ~10 -15 KCHF To get all components at the end of January we need to order its NOW 8

BACK UP 9

Matching with readout electronics (present and future variants) Present variant : Future variant : MAPD Fast Amp. G=30 Low gain output G=30 Signal adapter Slow amp. integrator CB DRS (for high energy deposition) DRS (for low energy deposition + muon calibration) or/and High gain output G=30 x 4 Shape and amplitude of MAPD signal after amplifier are PMT like ones. Easy to adapt to any readout scheme. 10