Status of the PSD upgrade

- Status of production of new temperature, HV control systems

MAPD gain monitoring system.- Status of the PSD temperature stabilization system

- Nearest plans

F.Guber, A.Ivashkin, O.Petukhov (INR, Moscow)

General EVO, 10 December 2013 1

Status of FEE and slow control system

MAPDs

Al-plate+ T-sensor

LED source

HV channels

10 Analog signals +trigger (adder)

SC connector

PCB with amplifiers and 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 stabilizationby Peltier element

Heat sink

PELTIER COOLER

Temperature sensor

Copper heat sink

Alplate

External TECcontroller

PSD module electronics

Compressed air

Ts -sink temperature sensorTo -object temperature seensor

To

Ts

Structure of new PSD electronics in the module with Peltier cooling

4

60 layers Al plate HV distributor PCB board End cover Plastic tube Lead-scinti, WLS-fibers with 11 optcal 10 SiMs board with with electronics with air inlet from air ~120 cm connectors T sensor (Power 0.5W) distributor box

Air distributor box

Pumped air

Temperature in this areashould be ~22◦±1◦Copper sink

Peltier with sink

&controller

5

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 (1x high precision, 1x auxiliary) and intelligent PID control with auto tuning. The TEC-1091 is fully digitally controlled/

TEC Controller

2 controllers and 2 Peltier elements (30 x 30 mm2) have been bought in November and now are testsing.

6

Some photo of new PSD electronic prototype

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.

-AprilInstallation 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.

7Martin help is needed in December –April !

8

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

9

BACK UP

Matching with readout electronics (present and future variants)

10

Shape and amplitude of MAPD signal after amplifier are PMT like ones. Easy to adapt to any readout scheme.

Present variant : MAPDFastAmp.G=30

Signal adapter

Slow amp.-integrator

CB

Future variant : MAPDLow gainoutputG=30

DRS

High gainoutputG=30x4

DRS

(for high energy deposition)

(for low energy deposition+ muon calibration)

or/and