January 13, 2020 - Service providers

Service providers discussion

Scope of 2020 SAD

• Booster will remain at UITF in 2020 to commission HDIce, nominally moves to CEBAF in 2021 during summer SAD.
• During the 2020 SAD we will...

-Make the gun operate a 200 kV (A: make present gun operate 200 kV, B: install new electrode)

-Reconfigure beam line extending from gun through chopper

-Commission the new gun and beam line with 200 keV beam

Beyond 2020 SAD

• We will not modify the configuration downstream of chopper until new Booster goes in

-This means the capture and QCM remain until Booster installed

-This also means we'll operate the gun and beam line at 130 keV until that time too

Status of the 2020 beam line upgrade

• Layout

-We have a preliminary ME layout, mainly to tally that everything will fit; notably we have a pretty good idea what everything will be

-CIS/INJ/CASA are evaluating exact sequence for functionality and to model the envelope, aiming to have this pretty well defined in Feb

-By end of Feb will be able to make a synopsis of before vs. after

• On the topic of everything, how does this go:

Vacuum

-Valves, same number, maybe one less

-IPs, Marcy has as-is tally, should be OK, may need to order couple small pumps

-DP stations, new NEG's for Y- and DP chamber, otherwise the same

Magnets

-Solenoids (beamline+chopper), updated bids due Wed 1/15, anticipate quick turnaround

-Wien filters, PO written, coils due early march

-Still need two 20A PS installed

-Still need WIen filter HV PS, switches, cables installed

-15 deg dipole, bids received, anticipate PO within a ~week (more S&A work than usual)

-1 trims now w/ comparator, need the same

-Haimons-style steering coils, should have enough in hand, will order spares once layout done

-Wien correction quads, TBD depends on layout/modeling, may re-use peanut quads initially

-6 trims now, probably need less

Diagnostics

-Harp, have two now, aiming for one later

-Viewers, TBD

-Brock cavity, goes away

-Current monitors, keep A1/A2/PCUP

-BPM's, TBD, but similar number

-Magic beam locating device, none

RF

-prebuncher, probably the same, but need more power >30W?...TBD

-choppers, leave as-is and decided to retain the captured solenoids (so no vacuum work or removal)

Chopping chamber

Designing entirely new 1:1 replacement, not sure it will be ready this SAD, but that's the goal, stay tuned