Difference between revisions of "For the second coil"
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* '''Action Items''' | * '''Action Items''' | ||
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** remove jumper box and cables and bring to F117 for rework - done | ** remove jumper box and cables and bring to F117 for rework - done | ||
+ | |||
** remove current-limiting resistor boxes, 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 | ** minimize summed coil voltage readouts, do most sums in PLC | ||
*** implement early-warning quench/overvoltage detection in PLC | *** implement early-warning quench/overvoltage detection in PLC | ||
+ | |||
** add separate readouts of splice and vapor-cooled lead voltages | ** add separate readouts of splice and vapor-cooled lead voltages | ||
+ | |||
** combine splice and lead into one hardware quench/overvoltage protection channel using Newport controller | ** 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 | ** match and balance all current-limiting resistors, go back to original 100k Ohm matched resistors | ||
+ | |||
+ | ** Danfysik power supply | ||
+ | *** understand ramp-down mechanism | ||
+ | ** UPS on Danfysik boards and contactor | ||
** measure fast dump resistors in power supply - done | ** measure fast dump resistors in power supply - done | ||
+ | |||
** Danfysik quench detector | ** Danfysik quench detector | ||
− | *** match and balance | + | *** match and balance resistors |
*** revert channels used for splice/leads to normal coil balance mode | *** revert channels used for splice/leads to normal coil balance mode | ||
*** install test points for gain/offset tuning | *** install test points for gain/offset tuning | ||
− | *** install pots for external balance | + | *** install pots for external balance if needed |
− | *** | + | *** note that max ramp rate in the hall is 10V / 20H = 0.5 A/sec |
+ | |||
** read out voltage taps for quench detection and DAQ using separate resistor chain | ** read out voltage taps for quench detection and DAQ using separate resistor chain | ||
*** will not go to active isolation for the upcoming coil | *** will not go to active isolation for the upcoming coil | ||
*** may need active isolation if passive isolation does not work | *** may need active isolation if passive isolation does not work | ||
*** may implement active isolation in the hall | *** may implement active isolation in the hall | ||
+ | |||
** install voltage divider to extend voltage range of USB device readout | ** install voltage divider to extend voltage range of USB device readout | ||
+ | |||
** rework Zener protection circuit on USB device | ** rework Zener protection circuit on USB device | ||
+ | |||
** update wiring diagrams to "as built" | ** update wiring diagrams to "as built" | ||
+ | |||
** get diagrams and spec sheets to Fernando | ** get diagrams and spec sheets to Fernando | ||
+ | |||
** 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) | ||
− | ** | + | |
+ | ** fix slow dump - done | ||
*** contact Steve L concerning spare Danfysik boards for testing slow dump circuits | *** contact Steve L concerning spare Danfysik boards for testing slow dump circuits | ||
*** contact Danfysik concerning debug strategy | *** contact Danfysik concerning debug strategy | ||
+ | |||
** understand signal clipping and interaction between readout modules, test and replace if necessary | ** understand signal clipping and interaction between readout modules, test and replace if necessary | ||
+ | |||
+ | ** automated elog entries | ||
+ | |||
+ | ** A-B HMI improvements | ||
+ | *** additional HMI license, get second computer working | ||
+ | *** dual-redundant HMI server or another machine for the server | ||
+ | *** HMI development machine and license | ||
+ | *** contact A-B salesman about licenses | ||
+ | *** change HMI database | ||
+ | *** more pre-defined trend plots | ||
+ | *** more HMI screens (may need license upgrade) | ||
+ | *** simplify existing screens | ||
+ | |||
+ | ** A-B PLC program improvements | ||
+ | *** simplify many operations | ||
+ | *** improve PLC early problem detection | ||
+ | *** improve PLC cryo control under varying CTF operating conditions | ||
+ | |||
+ | ** improve cryo system | ||
+ | *** minimize ice buildup | ||
+ | *** more heating/insulation on N2 vent line | ||
+ | *** do we need cold traps? | ||
+ | *** do we need additional valves, check valves, bypasses, whatever? | ||
+ | *** can we calibrate the C-glass sensors somehow? | ||
+ | |||
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*** will we open up coils 3 and 4? | *** will we open up coils 3 and 4? | ||
** what might we consider doing differently in the hall? | ** what might we consider doing differently in the hall? | ||
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** do we want an independent review of our fast (and slow) dump strategy and system? | ** do we want an independent review of our fast (and slow) dump strategy and system? | ||
** have we documented our experience? | ** have we documented our experience? | ||
− | + | ** sub-coil inductances | |
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− | ** sub-coil inductances | + | |
*** measure with inductance meter on the platform | *** measure with inductance meter on the platform | ||
− | ** inductance seen on splices | + | *** inductance seen on splices |
− | ** USB device wiring problems | + | ** USB and other device wiring problems |
− | ** | + | *** noise |
*** better indication of what caused fast/slow dumps -- either LED Panel or bits to the PLC | *** better indication of what caused fast/slow dumps -- either LED Panel or bits to the PLC | ||
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** did we ever implement guard shack notification? | ** did we ever implement guard shack notification? | ||
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Revision as of 11:44, 19 January 2011
- Action Items
- 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
- implement early-warning quench/overvoltage detection in PLC
- minimize summed coil voltage readouts, do most sums in PLC
- add separate readouts of splice and vapor-cooled lead voltages
- 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
- Danfysik power supply
- understand ramp-down mechanism
- UPS on Danfysik boards and contactor
- measure fast dump resistors in power supply - done
- Danfysik power supply
- Danfysik quench detector
- match and balance resistors
- revert channels used for splice/leads to normal coil balance mode
- install test points for gain/offset tuning
- install pots for external balance if needed
- note that max ramp rate in the hall is 10V / 20H = 0.5 A/sec
- Danfysik quench detector
- read out voltage taps for quench detection and DAQ using separate resistor chain
- will not go to active isolation for the upcoming coil
- may need active isolation if passive isolation does not work
- may implement active isolation in the hall
- read out voltage taps for quench detection and DAQ using separate resistor chain
- install voltage divider to extend voltage range of USB device readout
- rework Zener protection circuit on USB device
- update wiring diagrams to "as built"
- get diagrams and spec sheets to Fernando
- make more copies of full Danfysik power supply manual (get from Steve L)
- fix slow dump - done
- contact Steve L concerning spare Danfysik boards for testing slow dump circuits
- contact Danfysik concerning debug strategy
- fix slow dump - done
- understand signal clipping and interaction between readout modules, test and replace if necessary
- automated elog entries
- A-B HMI improvements
- additional HMI license, get second computer working
- dual-redundant HMI server or another machine for the server
- HMI development machine and license
- contact A-B salesman about licenses
- change HMI database
- more pre-defined trend plots
- more HMI screens (may need license upgrade)
- simplify existing screens
- A-B HMI improvements
- A-B PLC program improvements
- simplify many operations
- improve PLC early problem detection
- improve PLC cryo control under varying CTF operating conditions
- A-B PLC program improvements
- improve cryo system
- minimize ice buildup
- more heating/insulation on N2 vent line
- do we need cold traps?
- do we need additional valves, check valves, bypasses, whatever?
- can we calibrate the C-glass sensors somehow?
- improve cryo system
- 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
- USB and other device wiring problems
- noise
- better indication of what caused fast/slow dumps -- either LED Panel or bits to the PLC
- did we ever implement guard shack notification?
- what is causing blockage in vapor-cooled lead?