WF Wien Filters (200 kV upgrade)
Revision as of 07:58, 7 January 2021 by Grames
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
200 kV Wien Assembly
Making Nickel End Mirror Plates
- 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:010421_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