Difference between revisions of "For the third coil"

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'''To-do list'''
 
'''To-do list'''
 +
  
 
* Wiring
 
* Wiring
−
** checkout, understand noise, signal clipping and interaction between modules
+
** 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
 
* Danfysik power supply
−
** understand ramp-down mechanism
+
** add new readout channels - '''done 25-apr-2011'''
 +
** fix broken transistor - '''done 20-Apr-2011'''
 +
** commission fault sequencer
 
** fix slow dump
 
** fix slow dump
−
** choose ground fault detection compatible with quench detector
+
** 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
 
* 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
  
  
−
* Dataforth system
+
* 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?
  
  
−
* USB device
+
* NI USB device - '''replaced by VME DAQ system 7-Apr-2011'''
−
** rework Zener/divider box
+
** 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
 
* A-B HMI improvements
−
** upgrade to 100 screen license
+
** 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
 
* A-B PLC program improvements
−
** use custom ("add-on") instructions to simplify code
+
** mods for new coil configuration - '''done 25-Apr-2011'''
  
  
 
* EPICS
 
* EPICS
−
 
+
** new channels
  
  
Line 39: Line 64:
  
  
 +
* 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'''
 
'''For the hall'''
 
* note that max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec
 
* 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 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 additional valves, check valves, bypasses, whatever?
 
* do we need Dataforth voltage attenuators on coil tap channels?
 
* do we need Dataforth voltage attenuators on coil tap channels?
Line 49: Line 82:
 
* should we monitor all circuit breakers?
 
* should we monitor all circuit breakers?
 
* should we monitor all relays?
 
* should we monitor all relays?
−
* effect of B field on sensors/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

Latest revision as of 16:18, 13 May 2011

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
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