Difference between revisions of "For the third coil"
From GlueXWiki
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| Line 3: | Line 3: | ||
* Wiring | * Wiring | ||
| + | ** rewire for coil 3 subcoils | ||
| + | ** switch to 20k protection resistors for coil taps if needed | ||
** eliminiate pickup on downstream lead/splice and other channels (esp. during dump) | ** eliminiate pickup on downstream lead/splice and other channels (esp. during dump) | ||
** understand induced voltages on taps during testing | ** understand induced voltages on taps during testing | ||
| − | |||
** understand noise, signal clipping and interaction between modules | ** understand noise, signal clipping and interaction between modules | ||
| Line 12: | Line 13: | ||
** fix broken transistor | ** fix broken transistor | ||
** commission fault sequencer | ** commission fault sequencer | ||
| + | ** fix slow dump | ||
** understand ramp-down mechanism | ** understand ramp-down mechanism | ||
** understand varying fast dump time constant | ** understand varying fast dump time constant | ||
| − | + | ** choose ground fault detection mechanism | |
| − | ** choose ground fault detection | + | |
| Line 24: | Line 25: | ||
* Instrumentation | * Instrumentation | ||
** ensure all devices on clean power | ** ensure all devices on clean power | ||
| − | ** check out Newport controllers, flow switch | + | ** check out Newport controllers, flow switch, replace if needed |
** implement system to isolate fault detectors and determine time sequence of trips | ** implement system to isolate fault detectors and determine time sequence of trips | ||
** understand spikes on shunt Newport | ** understand spikes on shunt Newport | ||
Revision as of 13:08, 17 March 2011
To-do list
- Wiring
- rewire for coil 3 subcoils
- switch to 20k protection resistors for coil taps if needed
- eliminiate pickup on downstream lead/splice and other channels (esp. during dump)
- understand induced voltages on taps during testing
- understand noise, signal clipping and interaction between modules
- Danfysik power supply
- fix broken transistor
- commission fault sequencer
- fix slow dump
- understand ramp-down mechanism
- understand varying fast dump time constant
- choose ground fault detection mechanism
- Danfysik quench detector
- implement divider circuit upstream of QD to eliminate effects of coil imbalances
- Instrumentation
- ensure all devices on clean power
- check out Newport controllers, flow switch, replace if needed
- implement system to isolate fault detectors and determine time sequence of trips
- understand spikes on shunt Newport
- understand effect of B field on all sensors, move devices if needed
- monitor circuit breakers?
- NI USB device
- rework Zener/divider box, needs to be fully bipolar
- eliminate noise
- A-B HMI improvements
- upgrade to 100 screen license
- implement fault sequence screens
- A-B PLC program improvements
- use custom ("add-on") instructions to simplify code
- EPICS
- EWEB screens
- update for latest tags and drawings
For the hall
- note that max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec
- should we install a UPS on the Danfysik contactor and control boards?
- 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?
