For the third coil

To-do list

• Wiring
  • rewire for coil 3 subcoils - done 25-Apr-2011
  • 20 kOhm protection resistors for coil taps if needed for quench detector balancing - not needed 7-Apr-2011
  • document trip chains
  • label circuit breakers

• Danfysik power supply
  • add new readout channels - done 25-apr-2011
  • fix broken transistor - done 20-Apr-2011
  • commission fault sequencer
  • fix slow dump
  • understand ramp-down mechanism
  • understand varying fast dump time constant - possibly understood 8-Apr-2011, needs verification
  • choose ground fault detection mechanism
  • cover holes in cabinet - done 8-Apr-2011

• Danfysik quench detector
  • install bias pot on remaining three channels - done 7-Apr-2011
  • implement divider circuit upstream of QD to eliminate effect of coil imbalances - not needed 7-Apr-2011
  • install trip test points

• Instrumentation
  • ensure all devices on clean power with good grounds - done 8-apr-2011
  • check out Newport controllers, flow switch, replace if needed - done 25-apr-2011
  • implement system to isolate fault detectors and determine time sequence of trips - postponed 8-Apr-2011
  • understand spikes on shunt Newport - may never understand them...
  • understand effect of B field on all sensors, move devices if needed - devices moved 8-Apr-2011
  • monitor circuit breakers?

• NI USB device - replaced by VME DAQ system 7-Apr-2011
  • rework Zener/divider box, needs to be fully bipolar
  • eliminate noise

• VME-based fast DAQ
  • get hardware, test in lab - done 7-Apr-2011
  • write software, test in lab - done 25-Apr-2011
  • connect to apparatus - done 25-Apr-2011
  • real-time graphics

• A-B HMI improvements
  • upgrade to 100 screen license - done 6-May-2011
  • implement fault sequence screens if system implemented - not implemented 8-Apr-2011

• A-B PLC program improvements
  • mods for new coil configuration - done 25-Apr-2011

• EPICS
  • new channels

• EWEB screens
  • update for latest tags and drawings

• Auxiliary tests
  • requirements, setup for aux tests - done 12-May-2011

• Reenable cron job
  • when cooldown commences, end when warmed up - done 1-May-2011

For the hall

• note that max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec
• need travelers for coil installation.
• should we install a UPS on the Danfysik contactor and control boards?
• should we install a second contactor in the Danfysik power supply?
• do we need additional valves, check valves, bypasses, whatever?
• do we need Dataforth voltage attenuators on coil tap channels?
• do we need active isolation of coil tap channels, etc?
• should we monitor all circuit breakers?
• should we monitor all relays?
• what is the effect of B field on sensors/relays? should some instrumentation be relocated?
• do we need new flow sensors, or should they be relocated?
• lock box for power supply key
• more ethernet power strips
• use custom ("add-on") instructions to simplify PLC code