Re: changes to tofp HV operations

Date view Thread view Subject view Author view Attachment view

From: W.J. Llope (llope_at_physics.rice.edu)
Date: Fri Apr 11 2003 - 12:45:24 EDT

At 10:49 AM -0500 4/11/03, Frank Geurts wrote:
>Bill,
>i checked the TOFp HV operations pages and they need to be updated

right (see msg Tue, 25 Mar 2003 19:56:46 -0600 (CST))...

anyway, i'll do this in the next couple of hrs.. thanks
for the updated commands and the gifs...

>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procedures are somewhat outdated and can conflict with current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.
>
>
>Attachment converted: Mac8_D:slowcontrols.jpg (JPEG/prvw) (00012548)
>Attachment converted: Mac8_D:tof_top.jpg (JPEG/prvw) (00012549)
>Attachment converted: Mac8_D:tofphv.jpg (JPEG/prvw) (0001254A) 

-- 

  W.J. Llope, Ph.D.                      Res. Assoc. Professor
  T.W. Bonner Nuclear Laboratory         phone:  713-348-4741
  Rice University, MS-315                fax:    713-348-5215
  6100 S. Main St.                  
  Houston, TX 77005-1892            
             e-mail:     llope_at_physics.rice.edu
             WWW home:   http://wjllope.rice.edu/default.html

--
                        
Date view Thread view Subject view Author view Attachment view

This archive was generated by hypermail 2.1.4 : Thu Jul 24 2003 - 00:39:39 EDT