The PHOBOS Slow Controls System (S. Gushue, L. Remsberg, 03/09/1999)

Last updated on Saturday, July 07, 2001 01:02:24 PM

This document is a presentation of our view of the PHOBOS slow controls system. Strictly speaking, it should be called the slow controls and monitoring system, because its functions include both controlling certain devices, and monitoring various quantities from those and other devices. All items controlled and monitored will be logged in the database. The monitoring function includes display and providing alarms for values that exceed preset ranges.

 

Devices needing control:

Quantities to be monitored:

(These are presented roughly in descending order of how well they have been specified, and probably priority.)

The slow controls system runs in a PowerPC in a VME crate that will sit in the counting house. Other hardware currently in hand includes the ARCnet board to communicate with the LeCroy 1458 HV mainframe, and a VME-GPIB interface. As it now stands, the system will control and monitor the PMT high voltages.

Slow controls implementation plan:

1) What we MUST have in June 1999

2) What we PROBABLY want in June 1999

3) What we MUST have in November 1999

4) What we would LIKE to have in November 1999

Slow controls COSTS and BUDGET:

  1. MUST be purchased now to implement 1 above
  2. GPIB CAMAC crate controllers 2 @ $2145 $4290 WBS 6.6.5.2.7 (NSF)
    GPIB CAMAC crate controllers 2 @ $2145 $4290 WBS 6.5.3.1.5-6
    GPIB-140 GPIB fiber bus extenders 2 @ $1295 $2590 WBS 6.8.5.1.6
    GPIB fiber pair to reach the tunnel     Free
    GPIB cables of various lengths 5 @ ~$120 ~$600 WBS 6.8.5.1.6
  3. MUST be purchased now to implement 2 above in June
  4. GPIB scanning digital multimeter 1 @ $1500 $1500 WBS 6.2.2.2
    GPIB cable 1 @ ~$120 ~$120 WBS 6.8.5.1.6
  5. Must be purchased by ~September to implement 3 above in November
  6. GPIB scanning digital multimeter 1 @ $1500 $1500  
    GPIB cable 1 @ ~$120 ~$120  
  7. Must be purchased by ~September to implement 4 above in November
  8. GPIB scanning digital multimeter 2 @ $1500 $3000  
    GPIB cable 2 @ ~$120 ~$240