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PHOS APD Bias Control

PHOS APD Bias Control. Goal: To develop software for the PHOS APD bias control that uses the agreed ALICE standards for detctor control and coniguration. Different ways for controlling the APD bias voltages. Labview interface used in 2004, uses the RCU-sh interpreter via SSH.

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PHOS APD Bias Control

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  1. PHOS APD Bias Control • Goal: To develop software for the PHOS APD bias control that uses the agreed ALICE standards for detctor control and coniguration.

  2. Different ways for controlling the APD bias voltages • Labview interface used in 2004, uses the RCU-sh interpreter via SSH. Minor modifications needed in order to to work with new firmware (2-3 days) • Does not comply with agreed standards. • Micro code on the DCS command line via the the RCU-sh command interpreter. • Useful for debugging, but to tedious and difficult for upcoming beamtest • Does not comply with agreed standards. • APD bias control based on ROOT, DIM and FEE server/client software developed in Bergen. Huge progress made Dec 2005 – March 2006 by Bergen/Oslo. Some more development needed (2-4 weeks). • Complies with ALICE standards. • API for APD bias contrloll can be integrated in the final DCS system. • Could also implement FEEC temperature monitoring and logging.

  3. Current System Future system PVSS FED client (DIM) Intercom Layer FED server (DIM) Fee Client (DIM) PHOS FEEC APD GUI Configuration files PC 1 ”Command + data” BLOBs (SQL) Configuration Data base PC 1 = Fee Client (DIM) 1 Service info Request service Service data Subscribe to service Ethernet DIM DNS ”Command + data” Register service Outside world 20 Detector Fee Server (DIM) PHOS CE ”Execute” DCS card 28 1 DCS/RCU Mezzanine ”Command + data” 1 RCU backplane 1 RCU

  4. Test setup in Oslo/Bergen University of Oslo University of Bergen Firewall Firewall DID Information display DIM DNS Home APD GUI Request service Service info Register service Subscribe to service & download APD values DCS0052 + one Front end Card

  5. Summary • Communication chain DIM client/server and DIM DNS. • Status: Done • Downloading and applying APD configuration via DIM client/server and Feeserver software developed in Bergen • Status: Done • Temporary Solution for configuration database • Status: Done • Integration into PVSS II. • Status: To Do • Implementation of final configuration Database • Status: To Do • Testing of system with lates version of boardcontroller and FEECs • Status: To Do

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