February 24, 2020 - Resource meeting

Announcements

Mailing list launched => aipinj@jlab.org
Latest layout => Friday Feb 10
Costing rest of project

Run (now - May 6) - FY20 now...

Phase 1 (May 6 - end of 2020) - Starts in FY20, ends in FY21

Run (Jan 2021 - Sep 13 2021) - FY21

Phase 2 (Sep 13 - end of 2021) - Starts in FY21, ends in FY22

Tally components by systems media:200209_ResourceMeeting.xlsx

Correctors (21 pairs , down from 23 pairs)

Will re-use existing MBH (long Haimson), MHB (short Haimson), MHD (on A1 cube), and eliminate MAD in favor of another type
Total number of H/V pairs is 21 (goes down by 2 pair, so should free up 4 channels)

Dipoles (2: same number)

PO written for 1+1 new 15 deg dipole fits on 3" OD pipe (replaces existing similar MDS fits on 2.5" pipe)
500 keV spectrometer dipole (MBO) will either be re-used as-is, possibly modified for taller vacuum chamber aperture

Solenoids (11: same number)

Gun to Chopper region : retain two FG solenoids + upgrade the FH, FB, FQ with three new FX solenoids
Chopper : retain two FA solenoids captured to chopper cavities + upgrade the two FD solenoids with two new FY solenoids (TBD: one or two PS)
Chopper to Booster : upgrade FA, FL with two new FX solenoids

Quadrupoles (6: same number)

Replace existing 6 quads (types QW, QU) with two new triplets (3Q), under design now
If design is late or does not come to fruition, may retain the 6 quads we have now
Right now, retain one skew quad MQS0I07, but should be eliminated by improved Booster module

Earth Coils (2: same number)

One coil across chopper
One coil across chopper-booster

Wien Filters (2: same number, Vertical then Horizontal)

PO written for 2+1 pairs of 200 keV coils to retrofit on dipole steel
New electrodes under test at UITF

Viewer/Camera combos (13: same number)

Same in each region, go figure
YAG screens at TBD locations, metal markings on rear, metalized face for charge, Marcy getting bids from Radiabeam

BPM's (15, up from 11)

Gun to Chopper : increase count by one, and we're thinking on a standardized 2.5" OD w/ Haimson for first three after gun
Chopper to Booster : increase count by three, Phil is tallying available spare cans, need another BPM crate?!? :(

Harps (2, down from 3)

Gun to Chopper - one harp, removed an unpowered harp)
Spectrometer - retain harp

Current monitored apertures (8: same number)

Retain two insertable Faraday cups (PCUP, FC1); retain same hardware crash inhibit function
Retain some one spectrometer dump (DL)
A1 = retain, but would like remote linear control (has manual linear control)
A2 = retain as-is, PSS function
MS = retain, improve linear bellows
A3 = retain, as-is PSS function
A4 = retain, as-is PSS function

Grounded apertures (4: same number)

Chopping apertures A,B,C on improved linear bellows assembly, with new stepper controls
Central plug

Cavity monitors (1: reduced by 1)

Gun to chopper - Remove Brock cavity
Chopper to booster - Retain YAO cavity

RF (same, w/o capture)

Prebuncher - existing SS or new Cu cavity; will need new amplifier, evaluating in GPT then convert to gradient/Watts
Choppers 1/2 - same, new spare amplifiers purchased already
Buncher - retain
Warm capture - remove
SRF - replace 5+5 w/ 2+7

PSS (same number)

PSS kicker, retain - verify good for 200 keV at proposed location
A3/A4 - retain as-is
500 keV dipole - modify limits for 200 + buncher keV inj seg mode only, and if dipole height increased

Vacuum valves (7, increased by 1)

Gun to chopper - same three valves, but last viton valve VBV0I02 will become 2-3/4" all metal
Chopper to booster - increase w/ new viton valve after chopper to improve vacuum isolation for venting chopper
Spectrometer - retain valve

Vacuum ion pumps (17, reduce by 4)

Gun to chopper - retain same number, using UHV supplies
Chopping chamber - retain chopper cavities, reduce pump on chamber
Chopper to booster - reduce by 4, should all be on capture
Spectrometer - retain 1

Bullets from last meeting...

New 200kV small shed cathode electrode at machine shop (like electron at UITF)
New gun 10" anode flange being designed to locate a steering coil closer to the gun
Phil/Marcy starting to NEG coat vacuum chambers; need a 1kW sputtering PS that works (1 kV, 1 mA)
PO for 200 kV injector solenoids written (delivery April - June)
Shaun designed alignment fixture for new beam line solenoids
PO for 200 kV Wien magnet coils written (delivery March)
Success applying +/- 20kV to UITF Wien! Testing w/ better vacuum comes next...
PO to be written for new 15 deg dipole next week
Chase assigning new names for dipole and solenoids
Starting to study which laser vacuum window to use 2-3/4" as-is, or 4-1/2"
Curt waiting on kV spec for prebuncher @ 200 kV, for Watt in S.S. cavity
Reza/Alicia/Dennis evaluating re-ordering of layout
Looking at installing valve downstream of chopper #2 this down, possibly during fc#1 repair
Gary Cheng inquiring about checking cryo lines between QCM and Booster
5D beam line will be removed
Neil/Anthony working plan to build table to move QCM/Booster

ATLIS Tasks

AIPINJ

Non-AIPINJ

New Gun2 loading chamber
Placeholder for Tim Minga to test laser room smoke detector alarm to MCC/Guard

Quick links

Injector upgrade calendar

Run (now - May 6)

Phase 1 (May 6 - end of 2020)

Run (Jan 2021 - Sep 13 2021)

Phase 2 (Sep 13 - end of 2021)