Difference between revisions of "Gemeel122 log 375"
From Hall A Wiki
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| 426 ||source || Mar 21 2011 || || || 3850V || || Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable. | | 426 ||source || Mar 21 2011 || || || 3850V || || Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable. | ||
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| 427 ||ped || Mar 21 2011 || || || 3850V || || | | 427 ||ped || Mar 21 2011 || || || 3850V || || | ||
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| 429 ||source || Mar 21 2011 || || || 3850V || || 90Sr in middle of Ch1. Replace the Ch1Y gassiplex board | | 429 ||source || Mar 21 2011 || || || 3850V || || 90Sr in middle of Ch1. Replace the Ch1Y gassiplex board | ||
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| − | | 430 ||source || Mar 21 2011 || || || 3850V || || 90Sr on ch3. | + | | 430 ||source || Mar 21 2011 || || || 3850V || || 90Sr on ch3. Looks fine except for region of ch3y where pedestal are low. |
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| + | | 431 ||source || Mar 21 2011 || || || 3850V || || 90Sr on ch1. Still do not see any ch1y. | ||
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Revision as of 17:32, 21 March 2011
| RUN # | Source/Cosmic/Pedestal | Date | Start Time | End Time | HV | # of events | notes |
|---|---|---|---|---|---|---|---|
| 376 | Pedestal | Mar 9 2011 | 11:19:40 | 11:20:30 | 3.8V | 1593 | Chamber 1, problem with Y pedestals |
| 377 | Pedestal | Mar 9 2011 | 3.8V | junk, Do not see Y signals on the scope | |||
| 378 | Pedestal | Mar 9 2011 | 3.8V | junk, try changing board for Y readout. | |||
| 379 | Mar 9 2011 | 3.8V | junk | ||||
| 380 | Mar 10 2011 | 3.8V | junk while fixing problem. Not clear what the fix was. Maybe the connecting cable between gassiplex boards was not connected securely | ||||
| 381 | Mar 10 2011 | 3.8V | junk, low voltage off! | ||||
| 382 | Mar 10 2011 | 3.8V | junk, low voltage off! | ||||
| 383 | Ped | Mar 10 2011 | 3.8V | Good pedestal Chamber 1 | |||
| 384 | Cosmic | Mar 10 2011 | 3.8V | Tried 55Fe source. Not good | |||
| 385 | Cosmic | Mar 10 2011 | 3.8V | 90Sr source, center of chamber 1 | |||
| 386 | Cosmic | Mar 10 2011 | 3.8V | 90Sr source, move around chamber 1 | |||
| 387 | Cosmic | Mar 10 2011 | 15:03 | 3.86V | 90Sr source, move around chamber 1 | ||
| 388 | Ped | Mar 10 2011 | 3.86V | adjusted Ch 3 amplifier DC offset | |||
| 389 | Ped | Mar 10 2011 | 3.86V | Noticed ch 3 Y threshold had a gap | |||
| 390 | Ped | Mar 10 2011 | 0V | Connect up Chamber 2, play with DC offset for Ch 2 | |||
| 391 | Ped | Mar 10 2011 | 0V | Pedestal for Ch 1,2 and 3. Need to study | |||
| 404 | Ped | Mar 11 2011 | Pedestal look bad. [RMS ] [Mean] | ||||
| 406 | Ped | Mar 15 2011 | 0V | Pedestal look ok. RMS is small again,but problem with middle part of Ch1X. Start gas flow. [RMS ] [Mean] | |||
| 407 | cosmic | Mar 15 2011 | 3800V | Junk | |||
| 408 | ped | Mar 21 2011 | 0V | Hook up ch2 . Pedestals bad | |||
| 409 | ped | Mar 21 2011 | 0V | Junk | |||
| 410 | ped | Mar 21 2011 | 0V | Had ch1 cables into ch 2 input. | |||
| 411 | ped | Mar 21 2011 | 0V | Put ch1 cable back in proper input. Replace gassiplex card and connector for ch2x | |||
| 412 | ped | Mar 21 2011 | 0V | Replace gassiplex card and connector for ch1x. ch1x ped mean looks better. Now the ped on all are larger even when not connected to GEMS. | |||
| 413 | ped | Mar 21 2011 | 0V | Change nothing. pedestal RMS small. | |||
| 414 | ped | Mar 21 2011 | 0V | Connect CH1 gassiplex to GEM. | |||
| 417 | ped | Mar 21 2011 | 0V | Connect Ch1 and Ch2 to GEM. | |||
| 418 | ped | Mar 21 2011 | 0V | Connect all gassiplex to GEM. Ped RMS good | |||
| 419 | ped | Mar 21 2011 | 0V | Junk. Move Ch1 back to original amplifier card | |||
| 420 | source | Mar 21 2011 | 3500V | Only ch2 HV with 90Sr source. Ch2 tripped. | |||
| 421 | source | Mar 21 2011 | 3500V | Only ch2 HV with 90Sr source. Ch2 tripped. Do not see source | |||
| 422 | source | Mar 21 2011 | 3850V | Only ch1 HV with 90Sr source. Do not see Ch1Y | |||
| 423 | ped | Mar 21 2011 | 3850V | Raise Ch1 amp dc offset | |||
| 424 | source | Mar 21 2011 | 3850V | Only ch1 HV with 90Sr source.Do not see Ch1Y | |||
| 425 | source | Mar 21 2011 | 3850V | Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable. Now nothing makes sense. | |||
| 426 | source | Mar 21 2011 | 3850V | Only ch1 HV with 90Sr source. Reset the short connecting gassiplex cable. | |||
| 427 | ped | Mar 21 2011 | 3850V | ||||
| 428 | ped | Mar 21 2011 | 3850V | try new amp board | |||
| 428 | source | Mar 21 2011 | 3850V | 90Sr in middle of Ch1. no ch1y | |||
| 429 | source | Mar 21 2011 | 3850V | 90Sr in middle of Ch1. Replace the Ch1Y gassiplex board | |||
| 430 | source | Mar 21 2011 | 3850V | 90Sr on ch3. Looks fine except for region of ch3y where pedestal are low. | |||
| 431 | source | Mar 21 2011 | 3850V | 90Sr on ch1. Still do not see any ch1y. |
