From: W.J. Llope (llope_at_physics.rice.edu)
Date: Wed Feb 12 2003 - 14:19:27 EST
At 2:14 PM -0500 2/12/03, Frank Geurts wrote:
>First of all many thanks to Bill and Stephen for setting this up!!
>
><<<this is a working document, i am sure i forgot things please send
>me and Bill Waggoner any comments you have>>>
>
>------
>In this document I detail the slow controls (SC) interface to the
>TOF systems. The TOF systems consist of three major subsystems:
>TOFp, TOFr and pVPD. Until now, the pVPD and the HV for the TOFp
>have been in SC. The pVPD is both monitored and controlled (through
>the TRIGGER tree), the TOFp only feeds its HV values to SC for
>storage in its dbase.
>
>For this year the SC interface to TOF will be centralized through
>the TOF tree. It will have three subtrees TOFp, TOFr and pVPD.
>
>TOF
> |_pVPD
> |
> |_TOFp
> | |_ High Voltage
> | |_ comm
> | |_ HV monitoring
> |
> |_TOFr
> |_ High Voltage
> | |_ comm
> | |_ HV monitoring
> |_ Gas
> |_ comm
> |_ HV monitoring
you meant e.g. 'mixture monitoring' on this last line right?
otherwise looks great.. nice work,
nill
>
>
>* pVPD
>This interface will remain exactly the same as it always was. The
>GUI interface will be relocated to the TOF tree.
>
>* TOFp
>The TOFp hvmon program on tofpdaq.starp writes out hvmon.evt files
>on the SC disk. So far, this data has been recorded for dbase
>purposes only. From now on the HV settings can be monitored from SC
>interface. We will have a "comm" alarm which indicates whether the
>event file didn't get updated in 20minutes (yellow) or 1hour (red).
>A "G" box will explain to the shiftcrew what to do next: essentially
>referring to the online procedure for TOFp HV.
>The monitoring part shows the timestamp, the 4 branch HV values and
>the the 41 cells. Each cell has 3 numbers associated w/ it: cell-id,
>HVread and HVset. The format of the hvmon.evt file is as follows
>
>unix_timestamp
>HV_br0 HV_br1 HV_br2 HV_br3
>br cellid HVread HVset errorflag
><this last line repeats 41x>
>
>(example see below)
>
>The monitoring should not sound any alarms (yet) if possible it
>should change the color of that cell when the readback and set value
>are more than 80V apart. This value might change. Also, we would
>like to have the capabality of a "kill" file in which we can disable
>this behaviour for some cells (some notorious cells can show
>fluctuations >100V w/o performances problems)
>
>* TOFr
>** The TOFr gas system is the most important component to SC as it
>is a requirement for running isobutane and possibly SF6. The gas
>monitoring software on gasmon.starp writes out an event file called
>tofrgas.evt. The file consists of a single line of numbers:
>
>unix_timestamp freonflow isobutaneflow sf6flow isbutaneratio sf6ratio
>(example see below)
>
>-Like TOFp the Gas-comm alarm should ring in case of communication
>problems: yellow when not updated in 4minutes, red when not updated
>in 15 minutes. (These numbers might change)
>
>-The monitoring parts has alarms for the two ratios:
>if any ratio >1.2 yellow alarm
>if any ratio >1.6 red alarm
>
>Typical actions for the shiftcrew for yellow alarm:
>1. check all TOFr gasflows, pressures and the bubbler in the gasmixing room
>2. contact TOF detector expert
>
>Typical actions for the shiftcrew for red alarm:
>1. stop all gasflow to the TOFr tray by switching off all switches
>on the gasflow monitor in the gasmixing room
>2. contact TOF expert.
>
>
>-The monitoring part has only one gasflow alarm on it:
>if the freon flow drops below 55ccm: yellow
>if the freon flow drops below 10ccm: red
>
>Typical actions for the shiftcrew for Yellow alarm are
>1. check all TOFr gasflows, pressures and the bubbler in the gasmixing room
>2. contact TOF detector export
>
>Typical actions for the shiftcrew for Red alarm are
>1. switch OFF the TOFr HV
>2. perform actions 1+2 for yellow alarm.
>
>
>** The TOFr HV system will be writing out an event file too. It will
>have a timestamp and the set and read back values on the 4 HV
>channels. I'll update you on this one later ...
>
>
>
>
>-----hvmon.evt example:
>991870154
>200.6 3 3 3
>0 2 1605.12 1601 699 0
>0 6 1504.8 1533 663 0
>0 7 1610.4 1610 700 0
>0 8 1436.16 1421 632 0
>0 9 1547.04 1578 675 0
>0 11 1441.44 1466 632 0
>0 12 1338.48 1353 598 0
>0 13 1420.32 1439 627 0
>0 14 1602.48 1624 695 0
>0 15 1518 1529 667 0
>0 16 1330.56 1321 590 0
>0 17 1549.68 1565 671 0
>0 18 1760.88 1732 749 0
>0 20 1188 1421 524 0
>0 25 1475.76 1506 647 0
>0 26 1520.64 1515 666 0
>0 27 1459.92 1493 642 0
>0 28 1520.64 1511 658 0
>0 30 1531.2 1556 670 0
>0 31 1584 1592 693 0
>0 32 1457.28 1457 644 0
>0 33 1430.88 1466 633 0
>0 34 1322.64 1321 596 0
>0 36 1486.32 1497 655 0
>0 38 1338.48 1375 600 0
>0 39 1541.76 1520 667 0
>0 40 1459.92 1457 643 0
>0 41 1573.44 1615 691 0
>0 42 1639.44 1642 716 0
>0 43 1702.8 1736 735 0
>0 44 1536.48 1547 673 0
>0 45 1708.08 1736 739 0
>0 46 1333.2 1339 589 0
>0 47 1584 1592 691 0
>0 48 1473.12 1439 639 0
>0 49 1444.08 1479 638 0
>0 50 1618.32 1610 704 0
>0 52 1214.4 1457 542 0
>0 53 1523.28 1538 667 0
>0 54 1425.6 1443 628 0
>0 56 1473.12 1452 643 0
>-----
>
>-----tofrgas.evt
>1045076101 61.9 0.15 0.15 0.04 0.04
>-----
--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
--
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