UF-PNPI HV system

upgrade

Presented byN. Bondar.

CERN 3.9.2010

Part 1. HV System migration to USB interface Part 2. HV System proposal of Stage 2

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03.09.10 Oleg Maev, Nikolay Bondar and Mikhail Korolev

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Migration PNPI HV-system to USB interface

Back planeA-Side output connectors

C-Side output connectors

5 channel interface for A-Side

5 channel interface for C-Side

2 units of USB interface assembled and ready for testing

USB connectors

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03.09.10 Oleg Maev, Nikolay Bondar and Mikhail Korolev

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Migration PNPI HV-system to USB interfaceSW status:

1. HVServer is in progress:New features:- soft trip- automatic recovering in simple cases- log file with alarms, trips, etc. will be created by server

2. Test and Calibration SW (LAB) is under developing:- accuracy of current calibration will be improved- some bugs in voltage sensors calibration are fixed - test SW will be unified in according of our present conditions

3. Calibration in situ --- in the list of jobs to be done.

4. PVSS part – still under discussion.- the primary power supplies control has to be implemented in PVSS.

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Current status of the HV system connection and needs

56  RDB installed on the detector.

Total outputs (1 output = 4 HV channels)– 504

Used – 480 outputs

Spare – 24 outputs

Directly connected to chambers – 320 outputs

Connected via splitter x4 – 160 = 640 outputs

Total chambers connected – 960

Need to replace – 640-160-24=480 outputs 51 RDB

Unfortunately we need to spread all RDB for 8 places

So minimum number per position 7 RDB

Total we need to install – 56 RDB

UF-PNPI HV system. Stage 2 proposal

Oleg Maev, Nikolay Bondar and Mikhail Korolev

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To complete HV system we need install more: - 56  RDB - 8 Master Boards (MB)

We have spare: - 10 RDB  + 1RDB without regulators. 

- 2 Master Boards (Assume that it is enough as a 10% of 110 RDB and 16 MB)

To have ~10% of spare RDB and MB plus 10% of spare regulators we need to produce in total:

- 56 RDB + 400 spare regulators- 8 MB + 16 spare regulators

We need replace LV power supply to feed more RDB

UF-PNPI HV system. Stage 2 proposal

Oleg Maev, Nikolay Bondar and Mikhail Korolev

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Comments for price estimation 

• Assume that production of the modules will be at PNP• System assembly and initial test will be in PNPI  • Final test and installation – in CERN• All prices for components are based on the previous experience, so

it is not final and used for estimation.• The total number of components is about the same as in the first

stage, so the price should be almost the same • Some money needs for shipping/receiving it is not included

UF-PNPI HV system. Stage 2 proposal

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Price estimation:

• N Components Price, KCHF• 1 Discrete Elements 43.8• 2 Integrated Circuits 19.9• 3 Connectors* and Cables 13.5• 4 Printed Circuit Boards 19.5 **• 5 Mechanical Parts 6.7• 6 Chemicals and Miscellaneous 4.4  

       In Total   for components                   107.8

7 Assembling, testing             ~ 100 PNPI 8 Final test, calibration, installation ?? in CERN

* - output HV connectors already on shelf ** - Price based on the Russian production price

UF-PNPI HV system. Stage 2 proposal

Oleg Maev, Nikolay Bondar and Mikhail Korolev

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Estimated production time: Procedure relative time (month)

1 2 3 4 5 6 7 8 9 10

• Procurement and purchase of components

• Printed Boards correction• Mother Boards production• Regulator Boards production• Mother Boards stuffing• Regulator Boards stuffing• Mother Boards test• Regulator Board test• RDB assemble• RDB test• MB assemble • MB test• Packing and shipping

UF-PNPI HV system. Stage 2 proposal

Oleg Maev, Nikolay Bondar and Mikhail Korolev

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