1 / 10

Status of Tev IPMs April 1, 2009

Status of Tev IPMs April 1, 2009. Andreas Jansson. Recent work. After the power outage on February 11, IPMs stopped reporting data to ACNET Software detected persistent buffer errors bits, marking data as bad VIPM: Buffer 1/2 mismatch HIPM: Pbar marker error Swapped cables, to locate error

kiri
Download Presentation

Status of Tev IPMs April 1, 2009

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Status of Tev IPMsApril 1, 2009 Andreas Jansson

  2. Recent work • After the power outage on February 11, IPMs stopped reporting data to ACNET • Software detected persistent buffer errors bits, marking data as bad • VIPM: Buffer 1/2 mismatch • HIPM: Pbar marker error • Swapped cables, to locate error • Buffer mismatch followed upstairs PC • Pbar error followed downstairs crate. • Pulled buffer boards from vertical system for bench test. • Left horizontal PC monitoring vertical signals • Bench tested boards, finding nothing out of the ordinary • Upgraded test stand labview code and re-tested, saw nothing • Reinstalled, buffer mismatch problem gone • Had to distable signals from horizontal front end board 1, which was causing the pbar marker error. • Mechanics now seems to be working properly IPM status

  3. IPM status

  4. Current store January 2009. IPM status

  5. IPM status

  6. Good data IPM status

  7. Marginal data IPM status

  8. Bad data IPM status

  9. IPM status

  10. Conclusions • The IPM DAQ system is working properly again, reporting to ACNET • Signals are smaller than they used to be, fluctuating a lot and occasionally disappear altogether • Not due to stochastics of gas interaction • HV ruled out as a culprit(?) • Gas pressure fluctuating? • Not currently understood IPM status

More Related