Difference between revisions of "200kV Wien Filter"
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== Electrode modified for 20kV operation == | == Electrode modified for 20kV operation == | ||
* [https://logbooks.jlab.org/entry/3430990 Testing of existing feedthrough 20kV] | * [https://logbooks.jlab.org/entry/3430990 Testing of existing feedthrough 20kV] | ||
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| + | === Wien Filter Assembly Electrical Feedthrough (JLAB DCG 32893-0020) | ||
| + | * [https://www.mdcvacuum.com/DisplayPart.aspx?d=MDC&wr=US&p=9272007 ISI=9272001 / MDC=0815002] (20kV/15A) | ||
| + | * [http://www.lesker.com/newweb/feedthroughs/instrument_feedthroughs_shv20_singleend.cfm?pgid=cf Kurt Lesker= IFTXE011152] | ||
Revision as of 12:23, 12 December 2017
Modeling 200kV Wien filter
- J. Benesch, "Modeling the SLAC/JLab Wien filter" media:JLab-TN-15-032.pdf
- TOSCA model of air-side magnet assembly, that is (w/o Ni plates in vacuum chamber)
Coil Modified for 20Amp operation
- Replace 2 layer X 14 turn/layer #16 round wire w/ 2 layer X 13 turn/layer #13 square wire
- Maintain 5.00" ID chamber clearance
Magnet Steel Modifications
- Coil fits within existing transverse gap (chamber to steel), but not within existing vertical gap (conflicts electrode ports)
- Channels are cut into upper and lower steel yokes to allow coils to separate further (remove conflicts w/ electrode ports)
- COIL RETAINER PLATES (32893-C-0008) flipped hold coil 0.124" further from mid plane (0.312 - 0.188 inches)
Vacuum Chamber Modifications
- Larger coil width conflicts with magnet mount lugs
- MAGNET MOUNT LUG (32893-C-0024) width reduced from 1.45 to 0.95 inches welded to vacuum chamber body reduced and moved
Electrode modified for 20kV operation
=== Wien Filter Assembly Electrical Feedthrough (JLAB DCG 32893-0020)