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EMCal DCS Status
By
B. S. Nilsen, M. Cherney, J. Fujita
Creighton UniversityFor the
EMCal project
Contents
• Problems to be solved
• Completed tasks
• Plans
Problems to be Solved• Introduction of Recipes
– Been having difficulties making a working implementation.
– Recent workshop been very helpful.– Want to have a backup dcs system before we try
implementing this again.– Needed to allow for multiple configurations like LED
running.
• Busy occurring during Physics run attempts– Not seen during stand alone runs– Effects ERP Drill and LHC Dry runs
• ERP Drill and LHC Dry run– Most recent attempt when well (ERP), but effected by
busy
Completed Tasks
• 4/12 Super-modules installed and working.
• Emergency Button implemented.
• L0 timing issue understood and patched.
Plans
• Continue to tack down Busy problems.
• Obtain and install Parallel PVSS system on new DCS machine.– Implement recipes.– Improve and streamline Control system.– Set up Cooling control and monitoring.– Implement LED calibration.
• Reestablish remote development and test bed.
The EndThat’s All Folks
QuickTime™ and a decompressor
are needed to see this picture.
Outline• Installation• Fee Cards• DCS machines• Recipes• Cooling• Emergency
Button• PVSS panels• Going Busy• Physics Drill
• High voltage– ISEG
OPC/CANHVcontrol
• Low voltage• Led calibration
system• L0 timing• Planning• LHC Dry Run
Installation
• 4 out of 12 Super modules installed and working.
L0 Latency
• L0 presently arriving 960ns after interaction (352 BC)
• Expect to improve by 6 or 7 BC (150-175 ns)
Emergency Button
• Installed in August
• Hardware version yet to come.
Fee cards
• Suspected noise fee card has been swapped (twice now) but noise still there.
• Problem must be else where.– LTU system.– ELMB system.– ?
Going Busy
• PVSS has Intermittently been going Busy, when trying to go global, OK when in standalone run.
• Is SOD checks in the physics runs?
• Still under investigation.
Recipes
• Been having difficulties making a working implementation.
• Recent workshop been very helpful.
• Want to have a backup dcs system before we try implementing this again.
• Needed to allow for multiple configurations like LED running
Cooling
• Still some hardware problems and developments under way.
• PVSS monitoring still under development.
DCS Machine
• Present machine limits being reached.
• Acquisition of additional machine just starting.
• CERN has new contract with HP and dcs machine parameters still under negotiations.
High voltage
• Intermittent Problems with Iseg HV system have been seen.
• Simultaneous running of Iseg OPC and IsegCANHVcontrol may be source of problem.
• Fix planned ASAP.
LHC Dry Run
• First Try: Failed due to problems with LHC clock switching
• 10/16/09 Was busy and not in today.
• 10/19/09
Central DCS has all Detectors In READY state All 4 LHCExperiments will perform 2*(READY-BEAMTUNING-READY)
Physics (ERP) Drill
• First attempt took 3 tries
• 10/15/09 Attempt EMCal failed.
• Most resent drill Performed OK
Cycle throughREADY BEAM-Tuning READY
LED System
• LED are now working
• Will require changes in PVSS for proper operations (recipes).
Low Voltage System
• Operational
PVSS Panels
• System to date is adequate
• Will need to be redesigned to better support of full EMCal.
• Will attempt to make operational efficiencies.
Planning• Iseg OPC CANHVcontrol conflict to be removed (go to all
OPC control).• Continue to tack down Busy problems.
• Obtain and install Parallel PVSS system on new DCS machine.– Implement recipes.– Improve and streamline Control system.– Set up Cooling control and monitoring.– Implement LED calibration.
• Reestablish remote development and test bed.