03/02/2007
Fix ZD Trip
Ji Li, Steve and I went down the pit and found out that there was one connector broken and another one unplugged which just corresponding to the problem we have noticed. I replaced a good connector and plugged the other one on, ZD works.
Pull off board #1 and replace #45
After we fix the ZD HV issue, in order to prevent future accident for breaking the connector on the HV stand, we pushed the stand a little bit back into the hall. Then we noticed DR trip on HVEast S5S1 ch22 and ch3. We took the board off and cleaned briefly, it seemed works for a while but tripped again after 10 or 20 minutes later. So, we decided to use the board #45 which had been cleaned thoroughly by the electronics shop and passed the short time test. The #1 board will need to be cleaned next week.
The high current in DR Layer 37, 39 and 42 also disappeared after we replaced the board #1 with #45. Which indicates that there might be something wrong in the board.
03/30/2007
Check the HVTest Constants
solon sethv
HVConstants.py update HVTest
Created the HVTest tag, which has :
if old_value == 0 or old_value < 500:
new_value = old_value
if old_value > 1500:
new_value = 1000
if old_value > 1000 and old_value < 1500:
new_value = 800
if old_value > 800 and old_value < 1200:
new_value = 500
if old_value > 600 and old_value < 800:
new_value = 300
if old_value > -1000 and old_value < -500:
new_value = -500
if old_value < -1000:
new_value = -800