QA Workplace - Brief Description

Equipment overview

Cleanroom (class 10 000)
DAQ setup + PC
JULABO chiller
Detector control system (DCS)
Measurement of temperatures, humidity and pressure
Testbox - for 6 modules, cooling and gas manifold
Module boxes - ordered
Dry cooled air produced by a freezer
Opto-emulation card

DCS

Independently controlled
Physically separated - DAQ is situated in the clean room and DCS in the gray room
Communicating

Monitored parameters

Temperature in the testbox
Temperature of cooling liquid in Julabo chiller
Temperature of cooling liquid going out of the testbox
Temperature in the testbox measured by independent sensor
Humidity in the testbox
Gas pressure in gas reservoir
Overpressure in the testbox
Power

Failures foreseen

Power failure
Leakage in cooling liquid distribution:
- in the testbox
- outside the testbox
Gas failure
Lost connection between both PC
Measured parameters out of allowed range

What to do in case of problem?

- Automatic stop of measurement
- Controlled shutdown (ramp down all voltages on modules, files closing)
- Call the operator (mail, SMS, modem call to phone)

DCS Software

- Platform: Windows 2000
- Development environment: National Instruments Labwindows/CVI
- Reading information:
- from National Instruments ù AD card
- from other sensors via RS232
- TCP/IP protocol is used for communication with DAQ PC
- Semaphores indicating DAQ or DCS status
- DAQ data backup (on DCS computer)
- Logbook - fully automatic, save all parameters and changes in settings

Additional equipment:

- Laser (synchronized with R/O)
- XY stage (newly arrived)
- Beta source testing

What is done!

- Electrical tests
- Pseudo optical tests (AERO)
- Database upload
- Environment monitoring (DCS)
- Climate chamber for six modules
- Cooling system for six modules
- Personal qualification is ready for 6 experts (Zdenka Broklova, Jan Broz, Zdenek Dolezal, Peter Kodys, Petr Kubik, Pavel Reznicek), 3 support persons

Special tests

- Laser tests
- Beta source tests

Example of noise occupancy (20220990107653_NoPlot_20030731_075343.ps , 20220990107653_NoScurve_20030731_075343.ps):

Last change: August 31, 2004