1 / 10

Target Tracker

Target Tracker. Rate tests SM1. Sensor (1,3,4) no signal Plane 6 absent Sensor (1,2,7) no signal Sensor (1,2,12) ch60 171 light leak low count Sensor (3,1,12) no signal Sensor (1,0,16) ch1 107 light leak Sensor (1,2,16) ch64 304 masked (light leak)

lela
Download Presentation

Target Tracker

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. Target Tracker

  2. Rate tests SM1 Sensor (1,3,4) no signal Plane 6 absent Sensor (1,2,7) no signal Sensor (1,2,12) ch60 171 light leak low count Sensor (3,1,12) no signal Sensor (1,0,16) ch1 107 light leak Sensor (1,2,16) ch64 304 masked (light leak) Sensor (3,0,16) ch1 308 masked (light leak) Sensor (3,2,16) ch64 295 masked (light leak) Sensor (1,0,18) ch1 134 light leak Sensor (1,3,20) ch64 226 masked (light leak) Sensor (3,2,22) ch64 173 masked (light leak) Sensor (1,0,23) ch1 3045 masked (light leak) Sensor (3,0,23) ch1- 32 strange noise Sensor (3,3,25) no signal Sensor (1,1,27) ch1 1653 masked (light leak) Sensor (3,1,27) ch1 3733 masked (light leak) Sensor (1,3,28) ch64 849 masked (light leak) Sensor (3,1,28) ch1 251 masked (light leak) Sensor (3,3,28) ch64 123 light leak Sensor (1,2,29) ch1 328 masked (light leak) Sensor (1,0,30) ch1 235 masked (light leak) • 1 TT wall absent • 4 sensors absent • 1 problematic chip or flat cable (32 ch.) • "electronic" problem on ½ sensor • Real light leaks: 5 ch. • Masked ch.:12 (>200 Hz)

  3. Rate tests SM2 Sensor (3,0,1) no signal Sensor (0,0,4) no signal Sensor (1,3,4) no signal Sensor (1,3,11) low count Sensor (2,3,12) absent Plane 13 absent Sensor (1,2,14) no signal Sensor (3,2,14) no signal Sensor (3,1,17) ch1 125 light leak Sensor (1,1,18) absent Sensor (1,0,20) ch1 288 masked (light leak) Sensor (3,0,21) no signal Sensor (1,2,23) ch64 2138 masked (light leak) Sensor (3,2,23) ch64 1359 masked (light leak) Sensor (1,0,24) ch44 510 masked (light leak) wrong correction factor Sensor (1,2,26) no signal Sensor (3,1,26) no signal Sensor (1,0,27) no signal Sensor (3,1,27) ch4 106 light leak low count Sensor (0,1,28) no signal Sensor (1,0,28) no signal Sensor (1,2,28) ch1 126 light leak Sensor (2,1,28) low count Plane 29 absent • 2 TT wall absent • 13 sensors absent • 2 problematic chips or flat cables (32 ch.) • Real light leaks: 2 ch. • Masked ch.:4 (>200 Hz)

  4. Light pulsers SM1 Sensor (0,0,1) pulse generator? Sensor (3,3,2) pulse generator? Sensor (0,0,3) pulse generator? Sensor (0,1,3) pulse generator? Sensor (0,2,3) pulse generator? Sensor (3,3,5) pulse generator? Sensor (2,1,8) one LED does not work Sensor (3,3,9) one LED does not work Sensor (0,1,11) one LED does not work Sensor (1,2,12) check the cable connections Sensor (3,1,12) pulse generator? Sensor (3,2,15) pulse generator? Sensor (3,1,21) pulse generator? Sensor (3,2,25) one LED does not work? Sensor (3,3,25) pulse generator? Sensor (3,0,27) pulse generator? Sensor (3,1,27) pulse generator? Sensor (3,3,28) pulse generator? • 13 l.i. absent • 4 LED's or cables disconnected? • 1 cable disconnected?

  5. Light pulsers SM2 Sensor (1,1,2) one LED does not work Sensor (0,0,4) pulse generator? Sensor (1,3,4) pulse generator absent/broken Sensor (0,1,5) onle LED does not work Sensor (3,0,10) only LED does not work Sensor (1,3,11) check the cable connections Sensor (1,1,16) pulse generator absent/broken Sensor (1,1,19) pulse generator absent/broken Sensor (3,1,26) pulse generator absent Sensor (1,0,27) pulse generator absent/broken Sensor (3,1,27) check the cable connections Sensor (1,0,28) pulse generator absent/broken Sensor (0,1,28) pulse generator? • 8 l.i. absent • 3 LED's or cables disconnected? • 2 cables disconnected?

  6. To do by TT group • Replace the front-end cards where chip problems • Investigate about "missing" light injectors • magnetic field tests (ON/OFF) but after: • ~all sensors present • ~all light injectors working properly • all PMT numbers and correction factors checked

  7. TT running modes clear document under preparation in order all TT shifters to be able to run all modes without "experts" around" • TT "Functions" • pedestals • rate/channel (few minutes): • output: channel distribution • light injectors: • pulsing on one side and reading on the same side • pulsing on one side and reading on the other side • radioactivity (during long shutdowns): • left/right correlations in order to remove DC • cosmic rays (during long shutdowns) • x/y correlations (how many, ideally 1 x/y correlation and read all TT walls) • normal data taking mode

  8. For this year(after discussion with DAQ group) • Threshold= 1 p.e (nominal value=0.3 p.e) • Mask all channels with rate>200 Hz, go lower if DAQ still gets stuck (PMT spec. <300 Hz/channel for DC) • For a common run with other detectors next week, TT is running since this morning in the following conditions: • all channels with rate > 200 Hz masked, • thresholds at 2 p.e, • 2 x-y correlations (à la "Jacques"), • every day stop and restart by hand the DAQ (Loic will do that, agreement with Artem) to re-activate possibly deactivated sensors and avoid problems with data-base.

  9. Rate tests versus threshold mean values for both SM 1 p.e 2 p.e ch.# ch.# 11.0 Hz(2 p.e)/18.5 Hz(1 p.e) ch.# ch.#

  10. Super-covers and scotch problems? • same pieces of scotch used after intervention to glue back the super-covers!!! • nothing written in the TT logbook about these interventions! • once more, nobody is allowed to make any intervention on TT without reporting in the logbook.

More Related