Ion Pump Power Supplies - February 20, 2019

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Let's meet on Wednesday from 3-4pm in TL-1227 to discuss possible CEBAF injector vacuum upgrades.

Overview
Injector Upgrade - Gun through Quarter, maybe through FC2 gate is being rebuilt
Timeline/Opportunities - SAD (Aug-Oct, 2019), Upgrade (May 6, 2020 ... for 6 months)
Review Marcy/Daniel survey of injector IP power supplies media:190220_IP_Summary.xlsx
Existing Power Supplies
John's serial UHV work => unique design (low power 100uA, have interlock option, digital comm for readback, HV set, interlock limit?)
Digitel supplies work => aging, poor resolution (high power mA, many ganged pumps, analog ADC readback, interlock limit boxes?)
IP PS Upgrade Considerations
Ion pumps
Provide holding voltage with nA or uA curren
Provide starting current of X uA?
Independence (Adjust HV set on any IP, monitor current on any IP, interlock any IP)
Still require some high power supplies available for bakes, activation, readback helpful, interlock probably not necessary
Power supplies
Gamma SPC => experience in rest of machine, nA resolution, EPICSs
INC UHV => INC own/evolve design?, used at UITF, sub-nA resolution
John's presentation info
Why we did it media:why.pdf
How we did it media:how.pdf
Project Aurora media:aurora.pdf