Difference between revisions of "For the second coil"
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** understand ramp-down mechanism - '''done''' | ** understand ramp-down mechanism - '''done''' | ||
** measure fast dump resistors in power supply - '''done''' | ** measure fast dump resistors in power supply - '''done''' | ||
− | ** eliminate 2V DC offset | + | ** eliminate 2V DC offset - '''done''' |
− | ** fix slow dump | + | ** fix slow dump - '''done''' |
+ | ** implement ground fault detection compatible with quench detector | ||
** make more copies of full Danfysik power supply manual (get from Steve L) | ** make more copies of full Danfysik power supply manual (get from Steve L) | ||
Line 36: | Line 37: | ||
* automated elog entries | * automated elog entries | ||
+ | ** automatically dump screens to files | ||
+ | ** create perl script | ||
+ | ** create cron job | ||
* A-B HMI improvements | * A-B HMI improvements | ||
− | ** additional HMI license | + | ** get additional HMI client license from Steve |
− | ** | + | ** get second HMI computer working |
− | ** | + | ** implement A-B license server - '''done''' |
− | + | ** get A-B IIS file server system working - '''done''' | |
+ | ** upgrade to 100 screen license if needed | ||
** change HMI database to MySql - '''done''' | ** change HMI database to MySql - '''done''' | ||
− | ** more pre-defined trend plots | + | ** create more pre-defined trend plots |
− | + | ||
** simplify existing screens | ** simplify existing screens | ||
** better indication of what caused fast/slow dump | ** better indication of what caused fast/slow dump | ||
Line 54: | Line 58: | ||
** improve PLC cryo control under varying CTF operating conditions | ** improve PLC cryo control under varying CTF operating conditions | ||
** implement early-warning quench/overvoltage detection in PLC | ** implement early-warning quench/overvoltage detection in PLC | ||
+ | ** use custom instructions to simplify code | ||
* EPICS | * EPICS | ||
** serve out all PLC channels to CA | ** serve out all PLC channels to CA | ||
*** need list from Josh | *** need list from Josh | ||
− | ** implement guard shack notification for IOC crash | + | ** implement guard shack notification for IOC hang/crash |
* improve cryo system | * improve cryo system |
Revision as of 17:01, 27 January 2011
To-do list
- Wiring
- remove jumper box and cables and bring to F117 for rework - done
- remove current-limiting resistor boxes, bring to F117 for rework - done
- minimize summed coil voltage readouts, do most sums in PLC - done
- add separate readouts of splice and vapor-cooled lead voltages - done
- combine splice and lead into one hardware quench/overvoltage protection channel using Newport controller
- match and balance all current-limiting resistors, go back to original 100k Ohm matched resistors - done
- read out voltage taps for quench detection and DAQ using separate resistor chain - done
- update wiring diagrams to "as built"
- get diagrams and spec sheets to Fernando - done
- understand signal clipping and interaction between readout modules, test and replace if necessary
- minimize noise
- Danfysik power supply
- understand ramp-down mechanism - done
- measure fast dump resistors in power supply - done
- eliminate 2V DC offset - done
- fix slow dump - done
- implement ground fault detection compatible with quench detector
- make more copies of full Danfysik power supply manual (get from Steve L)
- Danfysik quench detector
- match and balance resistors - done
- install test points for gain/offset tuning - done
- install pots for balance
- install bias circuit if unable to eliminate Danfysik DC offset
- review needed?
- Dataforth system
- Correct for 2M Ohm internal impedance and 200k Ohm resistors in voltage tap readouts
- USB device
- install voltage dividers to extend voltage range
- add resistors to Zener protection circuit
- automated elog entries
- automatically dump screens to files
- create perl script
- create cron job
- A-B HMI improvements
- get additional HMI client license from Steve
- get second HMI computer working
- implement A-B license server - done
- get A-B IIS file server system working - done
- upgrade to 100 screen license if needed
- change HMI database to MySql - done
- create more pre-defined trend plots
- simplify existing screens
- better indication of what caused fast/slow dump
- A-B PLC program improvements
- new channels
- simplify many operations
- improve PLC early problem detection
- improve PLC cryo control under varying CTF operating conditions
- implement early-warning quench/overvoltage detection in PLC
- use custom instructions to simplify code
- EPICS
- serve out all PLC channels to CA
- need list from Josh
- implement guard shack notification for IOC hang/crash
- serve out all PLC channels to CA
- improve cryo system
- minimize ice buildup
- more heating/insulation on N2 vent line
- can we calibrate the C-glass sensors somehow?
For the hall
- UPS on Danfysik boards and contactor
- may implement active isolation depending on test results
- max ramp rate in the hall is 10V / 20H = 0.5 A/sec
- do we need additional valves, check valves, bypasses, whatever?
- do we need Dataforth voltage attenuators on coil tap channels?
Basic questions
- what is causing blockage in vapor-cooled lead?
- broken valve!
- lag between field and current...are there turn-to-turn shorts in coil 1?
- maybe short, maybe eddy currents
- what worked, what didn't for coil 1?
- what should we do differently for the next coil?
- will we open up coils 3 and 4?
- what might we consider doing differently in the hall?
- do we want an independent review of our fast (and slow) dump strategy and system?
- have we documented our experience?
- sub-coil inductances
- measure with inductance meter on the platform
- inductance seen on splices