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HV System Components

HV System Components. 1) Main control unit – CAEN SY527 (10 units – working well – some aging problem) 2) HV Generator modules – CAEN 753 (10 units – working well) 3) HV Distributors modules – CAEN 933 (80 units – lot of problems due aging) 4) PC for control and monitoring

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HV System Components

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  1. HV System Components 1) Main control unit – CAEN SY527 (10 units – working well – some aging problem) 2) HV Generator modules – CAEN 753 (10 units – working well) 3) HV Distributors modules – CAEN 933 (80 units – lot of problems due aging) 4) PC for control and monitoring (working well)

  2. HV System Status 1) Failing rate of HV distributors increase during last year 2) For the period of the November Be run (one month) we lose 4 distributors! 3) 6 broken distributors sent to CAEN for reparation 4) When we get it back, we will have only 4 spares, which is not enough to be safe for this year run

  3. System topology

  4. Plan for uprade 1) Replace one or two crates in the pit (240 or 480 channels) with the new system 2) Use replaced crates as source of spare parts for the remaining 6 crates QUESTION buy a new system from manufacturer (CAEN,…) or produce a custom made, based on resistor divider

  5. CAEN System 1) SY4527 - Universal Multichannel Power Supply System – BASIC 5680 EUR 2) A1932AP - SY1527 H.V. channels +3 KV/500 μA Distributor (48 ch) (Double width) 6,085 EUR 3) A2932AP - SY1527 H.V. channels +3 KV/250 μA Distributor (48 ch) (Single width) 6,085 EUR 4) SW4536 - SY4527 Control software 1,250 EUR

  6. Price for CAEN system • 240 channels (one old crate) (5680+5*6085+1250+2000) ~40000EUR (166 EUR/ch) 2) 480 channels (two old crates) (5680+10*6085+1250+2*2000) ~72000EUR (150 EUR/ch)

  7. Custom made system • Distributor made as a passive resistors divider • Setting of HV by hand (choosing R) • Include monitoring of HV by implementing microcontroller inside every distributor! • Use the same connectors on the back as we already use • Made the standard housing (bin) compatible with standard rack

  8. Price for custom system - Pricefor 480 channels expect to be ~25000 EUR (!?) (two crates+20 distributors+4 spare)

  9. Pro CAEN: Reliability, well known company, repairing options, support, compatibility, lot of options for settings and monitoring Custom: Perhaps price (!?)

  10. Against CAEN: Price Custom: R&D, lot of settings and calibration procedure

  11. Proposal • Postpone ordering from CAEN for a month • Immediately order connectors for patch panel • Try to find another company to make hardware, design and software would be by Belgrade group • During May, we can made few more Russian-type (without monitoring) distributors, then will be safe for few months

  12. THE END

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