07/03/2007
Check the HVEast S5S1.22 with Dan Peterson
Dan Peterson and I checked the HVEast S5S1.22. There is no voltage from the front panel when ramping to 2000V. So, there is broken wire in the blue connector or in the bleed resister circuit. As we have jumped by using the S5S1.21, we will leave it for now and just disable that channel from the constants.
07/06/2007
Testing the Board #16
The board #16 (SN: B51260) has been tested today.
When ramping up to 1500 V, bulk 0 suddenly dropped to 0 V with no current on the load. Same thing happened on bulk 1 and bulk 2 on 2000V. This had been tested on different slots in the mainframe, they all gave the same results.
07/16/2007
Update DetectorMap
- HVDetectorMap_ref.txt file
07/17/2007
Update DetectorMap
- tables/power_ref.txt
- Get power listing from Layer 42 Sector 25-27:
solon sethv hv get power DR L42 S25-27 5.1.22 | 5.0.2 AnodeLayer,42,Sector,25 AnodeLayer,42,Sector,26 AnodeLayer,42,Sector,27
- Get power listing from Layer 39 Sector 25:
hv get power DR L39 S25 5.1.22 | 5.0.2 AnodeLayer,39,Sector,25
- Get L41 Sector 25-27 power parameters:
hv get power DR L41 S25-27 5.1.15 | 5.0.1 AnodeLayer,41,Sector,25 AnodeLayer,41,Sector,26 AnodeLayer,41,Sector,27
- Get L38 Sector 25 power parameters:
hv get power DR L38 S25 5.1.14 | 5.0.1 AnodeLayer,38,Sector,25
- Power Layer 39 Sector 25 and L42 S25-27 by 5.1.21
Power L41 S25-27 by 5.1.14
Mordify the power_ref.txt file
39 | 25 | HVEast | 5.1.21 | 5.0.2 42 | 25-27 | HVEast | 5.1.21 | 5.0.2 41 | 25-27 | HVEast | 5.1.14 | 5.0.1 hv update detectormap
07/18/2007
Update DetectorMap
- Get the changed map power_ref_changed.txt
Layer || Sector || HV Box || Slot.Channel || Slot.Bulk 39 | 25 | HVPitEast | 5.1.21 | 5.0.2 42 | 25-27 | HVPitEast | 5.1.21 | 5.0.2 41 | 25-27 | HVPitEast | 5.1.14 | 5.0.1
hv update detectormap —upload
- Check result:
hv get power DR L39 S25 HVPitEast | 5.1.21 | 5.0.2 AnodeLayer,39,Sector,25 hv get power DR L42 S25-27 HVPitEast | 5.1.21 | 5.0.2 AnodeLayer,42,Sector,25 AnodeLayer,42,Sector,26 AnodeLayer,42,Sector,27 hv get power DR L41 S25-27 HVPitEast | 5.1.14 | 5.0.1 AnodeLayer,41,Sector,25 AnodeLayer,41,Sector,26 AnodeLayer,41,Sector,27
OK.
- Reload the HVGUI in the counting room, it's reflecting the current HV settings in the telent window.
- Write E-log:
The HV Detector map has been updated. Now the HVGUI is reflecting the same situation as those telnet windows. There is no black or gray colored sections in either current or voltage measurement GUI pictures. It is easier for the shifters to diagnose new problems.
07/23/2007
Disable HVEast channels
We had HV problem with the DRCA this morning. The symptom is a few HV channels (PitEast 7.2.20, 8.1.4, 8.1.6, 8.1.12, 8.1.14) kept tripping at FILL voltages(same as RUN @ 370V).
We first suspected bad HV module. But after replacing the module(#8) with #17, the problem persisted. We ran a few quick tests as list below:
(1) replaced HV module in slot-8, did NOT help.
(2) disconnected the blue connectors on the HV modules, this helped.
(3) disconnected the wires that feed into the detector on the HV patch panel, this did NOT help.
We'll take the #17 board back tomorrow.
As PitEast 7.1.20 and 7.1.22 share the same panel in the DRCA, Dan Hertz suggested to disable the 7.1.22 as well. So, I've made that changed too.
HVEast 7.1.20
- 1.22
- 1.4
- 1.6
- 1.12
- 1.14
HVChannelProperties:
HVNormal_RUN:
666 HVPitEast S7S1 13 20 CE 1
> 0 668 HVPitEast S7S1 13 22 CE 1> 0 749 HVPitEast S8S1 15 4 CE 1> 0 751 HVPitEast S8S1 15 6 CE 1> 0 757 HVPitEast S8S1 15 12 CE 1> 0 759 HVPitEast S8S1 15 14 CE 1> 0
=> 1.235
HVNormal_FILL: 1.236 HVNormal_OFF : 1.237
HVStateSettings: 1.126 1.235 1.236 1.237
Write to HV-Elog:
Done.
07/24/2007
Fix the DRCA problem
Two problems of DRCA have been fixed today. The first was solved by replacing the resister in the front patch panel. The second one was due to one loose connection channel from the blue connector to the Pancho panel.
Now, the HV constants has been set back to the stage two days ago, which have the DRCA channels enabled.
Check the DRCA voltage
They are the same voltage.
Try the kerberos to login
Message from Ji Li:
(1) log on to a public LEPP computer with your own user account. solsda would be the preferred machine if you are logging in from an off-site computer. (2) issue */kinit/* to obtain kerberos ticket. Please note, the tickets have a 24 hours(maybe 48 hours) life span. If your tickets have expired, simply get a new one. (3) */krlogin -l cleo31 solon2/* (or any other online computer).
kinit krlogin -l cleo31 solon2
OK.
Modify the HV Problem webpage
ToDo
- hv update detectormap : Get the changed ref_map by method ...
- Finish the SN number for the hardware
- Write HV procedure, send to Jim
- Send email ask for the third board and the issue of the #46 board
- Check the CESR HV enable signal with Mike
- Put sylguard on #8 board
- Update tags based on the new HVNormal