Agenda

Report from Scot on cryo design/changes
Equipment orders - Mark
Solenoid_Controls_Redesign - Mark, Josh, Scot, Cody, Yi, Elliott
- Danfysik quench detector
- shunt replacement
- UPS power to Danfysik
- ground fault detector using dump resistor
- redundant Danfysik contactor, quench detector, dump diodes?
- need more NI fast daq modules, 8 chan/module
Experiment Control Supervisor - Vardan, Hovanes, Elliott
EPICS evaluation
- archiver
- alarm system
- backup/restore
EPICS update - Nerses, Hovanes, Elliott
Controls test stand - Hovanes, Josh
- 435NBX serial module
- EPICS drivers and gui's
PLC programming, Viewpoint, licenses, etc. - Josh
- high-priority tasks
- add-on instructions -- ladder logic, function block, structured text
Elog - Elliott
- Midas elog
- Operator elog
Mantis task tracker
PyIRMIS or CLAS inventory database? - Hovanes, Elliott

Time/Location

9:30 AM Thurs 1-Dec-2011 CC F325

After the holidays.

Present: Elliott W, Mark S, Cody D, Josh B, Hovanes E, Scot S.

Equipment Orders

Mark has a few items to order. He will not purchase rack bases since we inherited a large number of rack-mount power strips.

Solenoid Controls Redesign

Scot presented near-final controls designs and drawings covering PLC chassis and module layouts, the many new or modified channels, changed actuator functions, etc.
We will have a redundant He liquid level monitor based on differential pressure, no need for the proposed "idiot light" (carbon resistor) system.
Josh will basically rewrite the entire PLC controls program from scratch, using the existing version as an "example."
We likely need one more Lakeshore Temperature monitor for the flange temperature probes.
Elliott reported we're nearly done with understanding and determining modifications needed for the quench detector.
Mark noted that Class 1 systems require less than 5 mA so that 20k resistors will work for 100 V max. George needs to verify the max voltage during fast dumps and quenches.
Mark will order the shunt replacement when Yi verifies it meets fast DAQ requirements.
Mark will have a center tab welded to the dump resistor so he can use it for the ground fault detector.

EPICS

Elliott reported plans to meet with Accelerator to explore many topics, including layering CSS/Databrowser on top of the MyA achive engine.
Hovanes will move on to alarm systems after the archiver.
Nerses continues to work on the JLab discriminator, next will be high and low voltage systems.

Test Stand

ELogs

Elliott demonstrated the new Midas elogs for manuals, maintenance logging and procedures. Comments are welcome, and please start using them.
We still need to choose and operator elog.

Mantis

Elliott reviewed recent progress reported in the Mantis system. More people need to start using this!