UPGRADED INJECTOR TEST FACILITY UPGRADED INJECTOR TEST FACILITY

UPGRADED INJECTOR TEST FACILITY

UPGRADED INJECTOR TEST FACILITY • Most groups stopped working on UITF during CEBAF SAD, including CIS (expected) • Recall we made 200 ke. V beam and cooled QCM to 2 K • More recently, Adderley started to work on the beamline, Shaun recently ordered all the 80/20 beamline support structure • Identified most of the hardware needed for elevated beamline at LERF, will borrow it • Team HDIce now meeting regularly with Shaun to finish design • IBC to be installed ~ end of August (W. Akers coordinating? LCLSII CMs must be moved, Kellner and company deployed)

UITF Meeting with Patrizia R. , June 15, 2018 Tasks before running beam to HDIce for target commissioning • Mechanical design, full time for next ~ 2 months, then intermittently (i. e. , Shaun Gregory and company) • Installation group to help secure HDIce target support structure • Suggest we use the Vacuum Group to build the Me. V beamline (my group can help) • Cryo: install the helium return line, or be content to vent the helium to the test lab • SRF, need a point of contact for all things related to QCM operation • Electrical engineering and SSG: design and build the PSS BCM, our "credited control" to limit beam current/loss and prevent accidental exposure to x-rays • Electrical engineering: stripline BPMs, get them to work • Magnet group: build a third trim-card rack • Cable-up the Me. V beamline: valves, viewers, magnets, BPMs, harps, water flow meters, current monitors, …. • RF group: commission the buncher with solid state amp, finish klystrons and high power amplifier, water skids • SSG needs to incorporate high power RF interlocks into PSS, recertify. Add PSS BCM to circuitry • Vashek: finish specifying the shielding requirements, then we start moving lead and sand (open CATS item) • RCG to install CARMs and electronics • R&D related to low current BPMs, suggest Andy take this on, with help from Engineering • Operations Group should augment Joe's modeling, using a particle tracking code (to support commissioning of QCM) • Safety and Approvals: OSP for buncher, OSP for Me. V beam, PSS BCM credited control documentation, UITF Accelerator Operations Directive, Conduct of Operations, Accelerator Readiness review (i. e. , lots of documents, lots of reviews) • Gun group needs to build a new photogun, improve the Wien filter, test polarimeters • Need to operate the UITF on a daily basis. . . students, Operators, Staff Scientist 1 (critical hire list) • Need access to liquid helium for weeks-long periods of time (i. e. , competition with LCLS) 3

Upgraded Injector Test Facility (UITF) FY 18 4

Upgraded Injector Test Facility (UITF) (slide from June) • • • Deliverables/Milestones • 200 ke. V beam, new gun, new beamline (gun getting moved to CEBAF now) • Test the new QCM, cold with RF, but no beam acceleration • Me. V beam delivered to dump at waist height by end of FY 18 • Me. V beam to HDIce FY 19 • Install new QCM at CEBAF, install old QCM at UITF (2020 SAD? ) Staffing issues related to QCM: • Cryo completed the work to connect the QCM to the CTF, Cool down to 2 K was successful, 80 K LN 2 shield seemed to work fine albeit without RF applied to QCM, VTA used LHe while QCM was cold. Many thanks to Cryo! • Work on high power RF has stalled • When needed: now Staffing related to Me. V beam • EES/SSG, provide the credited control we call “PSS BCM” • Bi-weekly meetings have started, we expect progress • When needed: ~ August (seems unlikely) Issues/Concerns that will affect on time delivery • Source Group will be busy at CEBAF injector through July but will try to find time to build second 200 k. V gun, complete the waist-height beamline and push the safety documentation forward toward ultimate ARR conclusion Recommended Mitigation • Be content with “best effort” basis, convert postdoc to full time employee 5