WF Wien Filters (200 kV upgrade)
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These pages contain materials for modifying the standard CEBAF Wien filter design (originally SLAC 100kV Wien filter) for operation at 200kV.
200 kV Wien HV Controls
200 kV Wien Magnet
- Feb 11, 2020 - Final coil design media:200KeVWienFIlter-32893-D-0131.pdf
- Mar 10, 2020 - Vendor has begun coil winding media:20200305_145427.jpg
200 kV Wien Assembly
Making Nickel End Mirror Plates (Jan 2021)
- Riad identified H-Wien magnetic Ni end clamp plates were not as good magnetically as V-Wien
- New (5) plates were ordered, fabricated by the machine shop
- Material certifications here: media:210104_NickelCerts.pdf
- Since Ni cleaning was with solvent only (Micro-90 can react/etch Nickel)
- Annealing performed per vendor spec (1450F for 30min)
CEBAF Wien Filter Upgrade Iterations
- 200kV Wien filter - FINAL - This is for the two rebuilt Wien filters for CEBAF.
- 200kV Wien filter - V3 - Third iteration modeled in CST by Gabriel with improved 40 kV feedthroughs has demonstrated (2019) 20kV per plate at UITF on a test stand but test still undergoing. Intended as a testbed for 20kV switch chassis test in preparation for implementation at CEBAF.
- 200kV Wien filter - V2 - Second iteration built using 20kV feedthroughs and HV tested in UITF beamline 2018 to ~12 kV limited by large vacuum excursions
- 200kV Wien filter - V1 - First iteration to modify CEBAF Wien filter for 200kV operation, fabricated per Jay's proposal, and installed at UITF 2017