Development and Testing of Improved 200 keV Wien Filter System
This detailed documentation discusses the development and testing of an improved version of the 200 keV Wien filter system, including modifications made for enhanced performance. Key aspects covered include the use of 40 kV CeramTec HV feedthroughs, cable connections, switch chassis design, and control systems. The system is intended for testing at UITF as a precursor to future implementation at CEBAF. Various images, diagrams, and control system details are provided to illustrate the setup and components involved in the project.
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Presentation Transcript
200 keV Wien filter V3 October 9 2019 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. The version of the Wien filter described here is an improved version of the one tested in UITF beamline with the following changes: 40 kV CeramTec HV feedthroughs (3/4" diameter). Spring-guide to couple to 40 kV feedthrough Spring to match design, but we had to use some that are slightly magnetic. Danny ordered new non-magnetic springs and gave them to Phil. HV tests have been performed without the magnet coil and without the iron yokes
HV switch chassis (K. Cole) Keith is ready to start building the prototype to be tested at UITF He wants to see if the cable guide used by the retired oil tank PS can be utilized to draw the 30kV new cable. He would like to take opportunity now that injector is open day shift. Has mostly everything on hand to start Direct connection between Matsusada HVPS and switch chassis Connection to Wien will have interlock cable We need to decide on the HV connection to Wien a) Mate 30kV cable directly to CeramTec 40 kV feedthrough cable, or b) Mate 30 kV cable to bayonet shv style connecter, then that to junction box to CeramTec 40kV feedthrough cable
HV controls (G. Croke) Digital I/O and ADC channels we'll plan to use: Switch box control and status readback: Output: iocitfgun XY244 digital I/O card, output 6, PV = IGLK100DIOLWTB.B6 Input: iocitfgun XY244 digital I/O card, input 21,PV = IGLK100DIOHRD ADC readbacks of power supply HV: iocitfgun XY566 board, channel 1, PV = IGLK100AI2 iocitfgun XY566 board, channel 2, PV = IGLK100AI3 One unresolved question is whether we want to have an 'injector steering script' for Wien plates and magnets at UITF like in CEBAF?
HV controls systems block diagram (G. Croke) Wall power supply Matsusada CO Series RS-232 to Optical Optical cable Optical cable Optical cable RJ45 to DB-25 female Com pin 7 yellow RX pin 3 green TX pin 2 red Matsusada CO series Matsusada CO series Set to Channel 1 Set to Channel 2 115V AC power cords Optical to GPIB Optical to GPIB 115V AC power cords See manual See manual Commercial CAT 5 cable with standard pinout GPIB GPIB GPIB 30 kV power supply 30 kV power supply Matsusada Analog out Analog out AE Series Matsusada AE Series Digiport Server Channel 3, rack ITF21 XY566 CH1 CH2 board ADC iocitfgun Network EPICS iocsoftitfhv1 HV Cable HV Cable EPICS itfbat0 XY244 Service building board Server room DIO O6 I21 Switch Status HV Switch Box Service Building HV Cable HV Cable HV Cable Tunnel Wien Filter in Tunnel
