08/08/2007

Test the Board #46

HV Board #46 S/N: 1060465 Cust S/N: B67759 Call #: 79824 Sent date: 08/03/07

Bulk 0: Trip at 1700V (But without load is OK)

Bulk 2: Trip at 2100V in one minutes

08/14/2007

Replace the HV board 17 with 8

Ji and I put the HV board #8 back to the PitEast Slot 8, to replace the #17. Now the #17 is a good spare board.

Update the ModuleLog file

08/27/2007

ZD current

 I noticed something suspicious - in the HVDebugFrame of the
HVGUI (shows mapping of logical unit/channel to detector segments), ZD
layer 6 channels are grouped with DR F1Minus channels on logical unit
21 channels 16-23.  But when I look at what seems to be the latest
version of the constants for HVDetectorMap (created on July 18?), the
DR F1Minus channels are on logical unit *23* channels 16-23.  Since
the HVGUI should be getting this mapping from the constants, something
seems weird here.  If the HV server also has these channels mapped to
2 different detector segments, this could definitely cause ZD layer 6
never to be updated since it never satisfies the criteria for
updateLayerCurrents to be called from HVPropMonitor::interpret (for
one thing, it assumes the detector string to be a certain format,
which it probably isn't in this case).  We can probably see pretty
quickly whether this is a problem with some debug statements in the
server, but maybe we should ask Xin first whether there is something
obvious going on with the constants?
 

08/28/2007

DetectorMap problem

Ji Li    10:26:15
Xin and I changed the HVDetectorMap: DR F1- was pointing to PitWest LU-21, channel-16-23 which is actually occupied by ZD layer-6. We changed DR F1- to PitWest LU-23, channel-16-23 so it is tied with ZD F1-(both have +100V high voltage settings according to the HVChannelProperties constants). The new version for HVDetectorMap is 1.26 and is given the HV_Normal tag. Restarted the HV server and the current on the CESR screen for ZD layer-6 is right now.

Why this problem did not show up earlier remains a mystery...

Discussion with Dan Hertz and Ji Li

S10 B2 DR F1- 220V S11 B0,1,2 ZD 1900V S12 B0 OFF

B1 ZD F6+ 200V B2 ZD F1- 100V

ChannelProperties is right!

DetectorMap is wrong.

Inverse DetectorMap need to be updated.

Should have slot-channel numbers in the inverse detector map on to of the LU. (Also may inplement the fixed header when scrolling done the table in the web browser)

In the DetectorMap:

DR F1- should be in LUN 19 (need to be changed) ZD F1- should be in LUN 23 (OK in the map)

Changed this in the SessionManager. Checked with the HV on. OK.

Write in to E-log.