From: Frank Geurts (geurts_at_rice.edu)
Date: Fri Apr 11 2003 - 11:49:41 EDT
Bill,
i checked the TOFp HV operations pages and they need to be updated
especially now that we have monitoring capabilities in SC and some
procedures are somewhat outdated and can conflict with current procedures.
Once you updated the webpages could you recreate the tarbal for tofp.starp.
thanks,
frank
==> http://mac8/~TOF/TOFp/operations/procedures/proc_HVonoff_tofp.htm
* remove procedure item (7), we don't use tofhv-Alarm anymore and don't
want any shiftcrew to start it either.
* add new item (7a):
"Go to slow controls terminal and click on TOF->TOFpHV->P (see
attached JPG).
or
item 7b:
open as user "sysuser" an xterminal on sc3.starp and start the TOF
alarm handler "tof_top" (see attached JPG) and click on "TOFp Monitor"
(see attached jpg)
* watch the unix timestamp update (should do so every 10minutes) and
check that the Voltage on Branch 0 is about 200V (usually somewhere
between 199-201V). All HV read and set values should be non-0. An
unfortunate feature of the HV readout cause losses of bits. This may
result in "overflowing" readback values of about 2400V. These appear
randomly and should typically dissappear after subsequent readouts.
If a channel remain below 1200V for a longer period (typically more than
1hr) it might have died and TOFp detector experts should be contacted
(tofp_at_physics.rice.edu).
==> http://mac8/~TOF/TOFp/operations/procedures/proc_HVmonitor_tofp.html
remove proc.item 3, 4 and 5
add new item 3a (same as item 7a and b above)
add new item 3b:
Alternatively you can check the monitoring daemon on tofpdaq.starp
Make sure the monitoring software is running by typing "hvmon status".
If the output is "HVMON is not running" then start type "hvmon start"
and wait ~45sec and type "hvmon status". This will dump the latest
monitoring cycle on the screen:
=example=
[tofp_at_tofpdaq ~/hvsys]% hvmon status
tofhv-Monitor (pid 15170) is running...
[54]: 1626/1641V [56]: 1666/1650V
monitor : preparing readout [MONITOR @
t=105007542testHV : Short circuit test on HV ... passed
testHV : power lines <0>:199.6V <1>:3.2V <2>:3V <3>:3V
displayPage : Branch <0> status (page 0)
[ 2]: 1798/1799V [ 4]!:1399/1718V [ 5]: 1819/1808V
[ 7]: 1814/1808V [ 8]: 1629/1619V [ 9]: 1732/1749V
[12]: 1526/1551V [13]: 1637/1637V [14]: 1808/1821V
[15]: 1698/1700V [16]!:2474/1361V [17]: 1761/1763V
[18]: 1951/1930V [21]?:2513/1591V [22]!:2471/1637V
[23]: 1539/1537V [24]: 1716/1731V [25]: 1690/1704V
[26]!:2030/1713V [27]: 1674/1691V [28]: 1711/1709V
[29]: 1758/1754V [31]: 1793/1790V [32]: 1650/1655V
[33]: 1642/1664V [34]: 1510/1515V [36]: 1671/1695V
[38]?:2463/1573V [40]: 1650/1655V [41]: 1790/1812V
[42]: 1830/1840V [43]: 1917/1934V [44]: 1719/1745V
[45]: 1925/1934V [47]: 1790/1790V [49]: 1629/1650V
[50]: 1668/1664V [52]: 1666/1655V [53]: 1740/1736V
[54]: 1626/1641V [56]: 1666/1650V
Testing.
replace item (4) with this:
the exclamation (!) marks indicate a possible problem but might well be
the result of random readback problems. Typically they should dissappear
in subsequent readouts. If for a particular cell they do not change for
a long period (>1hr) contact TOFp Detector Experts
(tofp_at_physics.rice.edu). The question mark (?) indicates identified
readback problems and can safely be ignored.
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