HV system migration to USB interface

Presented by Korolev M.

Outline

Current situation HV Control Unit Hardware Proposed HV System layout HV Control Unit Software HV System Current calibration

Planning for 2011 year

2Bondar N. Korolev M. Maev O.

Current situation HV Control Unit Hardware

Back planeA-Side output connectors

C-Side output connectors

5 channel interface for A-Side

5 channel interface for C-Side

USB connectors

2 pc. of HV Control Units are assembled, debugged and tested Problems:

-Opal Kelly changed Firmware as a result the project was changed- Few small mistakes in assembly

Bondar N. Korolev M. Maev O.

HV System C

Matsusada

HV CUHV System A

Matsusada

PC

HVM Server A

PC

HVM Server C

USB

RS232

HVHV

Ethernet

USB

RS232

Current situation Proposed HV System layout

5Bondar N. Korolev M. Maev O.

Current situation HV Control Unit Software

Main part of SW for HV Control Unit is almost ready. Debugging and testing is in progress.Control tasks: Control and monitoring Master Boards (MB) Control and monitoring Remote Distribution Boards

(RDB) Control and monitoring Matsusada PS Smart output current monitoring

1. Soft trip2. Trip

Exchange information with PVSS

Bondar N. Korolev M. Maev O. 6

Current situation output current and voltage sensors calibrationIn order to have more precise current measurements a new

procedure of current sensors calibration has been developed. - The RDB test load box with 3 nominal resistors are assembled

Scale divided on three regions:0-4 muA (~+-2-3 nA precision) – 1GOhm res.4-40 muA (+- 10 nA precision) – 100 MOhm res.40 -100 muA(+-100 nA precision) – 10MOhm res.

- Special tool for measurement RDB and MB high voltage is prepared

- SW for calibration of HV and current sensors is in progress

We are planning to migrate to new HV Control Unit during of 2012 year shutdown. To meet this milestone we need complete the following tasks:

debugging and testing of HV Control Unit SWHV Control Unit Software implemented to PVSS – Who? Implemented some tests in situ Solve the problem with LV for RDBVisits to CERN for Korolev M. for 2011 y - 4-6 months for

the next year

Bondar N. Korolev M. Maev O. 7

Planning for 2011 year