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HBD HV Control and Monitoring System

This document outlines the upgrades for the HBD HV Control and Monitoring System, including calibration, resistor measurements, and mesh voltage sweep. It also discusses the project progress and upcoming tasks.

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HBD HV Control and Monitoring System

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  1. HBD HV Controland Monitoring System RESISTORS, CALIBRATION & CO. Manuel Proissl HBD Meeting 12/23/2008

  2. Upgrades For Run9 | PHENIX, BNL HBD HV Control System HBD Meeting :: December 23rd, 2008 OUTLINE • Project: dV = 0 • Step 1: Calibration of LeCroy PS • Step 2: Resistors on Divider • Step 3: Mesh Voltage Sweep vs. ADC Readout • Project Progress • Calibration Routine / Curves • Calibration Program in HV Control • Divider(s) • Resistor Measurements on HBD • Cable Coding (…) • Coming Up HBD HV Control & Monitoring System Manuel Proissl Page 2 of 6

  3. Upgrades For Run9 | PHENIX, BNL HBD HV Control System HBD Meeting :: December 23rd, 2008 PROJECT: dV = 0 • Step 1: In order to accomplish the project’s goal, the fundamental prerequisite is knowing the ACTUAL voltage we’re applying… • Issue: Difference between DV, MV (mainframe) & actual voltage supplied • Solution: Calibration Curves for all channels • Step 2: What voltage ends up being supplied to the GEM/Mesh? • Issue: Resistor values only known by color code (…) • Solution: Measurement of all resistors installed on divider board • Step 3: What is going to be The Mesh Voltage for RB? • Issue: Who knows? • Solution: 1+1 Mesh Voltage Sweep during +/- config and ADC readout files for every sweep voltage  analysis  peak of PE vs. Mesh V. HBD HV Control & Monitoring System Manuel Proissl Page 3 of 6

  4. Upgrades For Run9 | PHENIX, BNL HBD HV Control System HBD Meeting :: December 23rd, 2008 PROJECT PROGRESS • Under IR Access > MF Calibration, HV Control runs a calibration procedure automatically for every channel, while the Fluke via divider records every second (FlukeView) the output voltage of the particular channel on the LeCroy • After initial non-linearity problems (unknown current development), further calibration work will be done (…) • ALL resistors have been measured with Fluke in nS through FlukeView with 20 stable events each for average calculation • These will be out shortly… available in the hvdb database • ALL take-out resistors have been labeled with an unique position code • From now on, any future changes can be done safely without any mix-up! HBD HV Control & Monitoring System Manuel Proissl Page 4 of 6

  5. Upgrades For Run9 | PHENIX, BNL HBD HV Control System HBD Meeting :: December 23rd, 2008 THE RESISTOR CODEC View from IR Front E W Resistor ID Code ES5 EN4 WS5 WN4 ES4 EN3 EN5 WS4 WN3 WN5 ES3 WS3 2 4 6 8 S S N N HV Box (1-8) Module Num. (1-5) GEM (T, M, B) Layer (1-3) 1 3 5 7 ES1 ES2 EN1 EN2 WS1 WS2 WN1 WN2 HBD HV Control & Monitoring System Manuel Proissl Page 5 of 6

  6. Upgrades For Run9 | PHENIX, BNL HBD HV Control System HBD Meeting :: December 23rd, 2008 COMING UP • Resistor Values into hvdb database • Connecting to config system in HV Control • HV remote testing until Jan 2nd • Correction Curves for 1471N Calibration: new divider setup… • Distribution / Installation Files for Linux & XP/Vista • Platform independence • Final installation files with Installation Wizard • HV remote testing / system improvements until Jan 2nd • HAPPY HOLIDAYS!!! HBD HV Control & Monitoring System Manuel Proissl Page 6 of 6

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