MICE CM 19 Synopsis Michael S Zisman Center

MICE CM 19 Synopsis Michael S. Zisman Center for Beam Physics Accelerator & Fusion Research Division Lawrence Berkeley National Laboratory MICE Video Conference 105 November 1, 2007 October 10, 2007 Wrap-up and Action Items-Zisman

Introduction • After CM 19 a number of items were identified for further work — this talk covers the main outstanding items o serves as reminder of what tasks are needed to make our schedule — original wrap-up talk should serve as primary reference to what is needed • Now 80 days to target date for Step 1 —plenty still left to do, but we’re getting there October 10, 2007 Wrap-up and Action Items-Zisman 2

Present Priorities • General — getting ready for beam in January 2008 o getting the hardware built, installed, and running o organizing the collaboration for running the experiment – shift leaders, system “experts”, operations manuals — next most important o get ready for cosmic test in November (detector shakedown) • Beam line is “first up” — effort needed to: o get components installed, aligned, and operational o finalize optics design (making progress) – resolve Turtle vs. G 4 BL discrepancy – define tuning/correction schemes, incl. collimators and control algorithms – develop commissioning plans October 10, 2007 Wrap-up and Action Items-Zisman 3

Beam Line Issues (1) • Practice taking out old target as if it is highly activated — Radiological Protection Assessment completed already • Now have agreement from ISIS on DLC-coated target — how many pulses will be allowed? — decide on target orientation (along or normal to ISIS beam) • Understand production rate vs. loss rate in ISIS — need agreement on acceptable ISIS loss rates — need “clean” target test where losses confined to last 1 ms of cycle (January run) • Make sure diffuser mechanism safe under power failure — return to known state October 10, 2007 Wrap-up and Action Items-Zisman 4

Beam Line Issues (2) • Fix misalignment in upstream beam line and target box (KT talk) • Upstream magnets need lots of work — vacuum, water, power, alignment — D 1 chamber is “too close to the edge” o looks like 10% loss of “good muons” (should this should be fixed? ) — decay solenoid needs testing (paced by Linde refrigerator) • Beam line review scheduled for November 16 at ICL — document need for correctors and collimators October 10, 2007 Wrap-up and Action Items-Zisman 5

Cooling Channel Issues (1) • Magnets — develop operational procedures for all devices o spectrometer solenoids, focus coils, coupling coils, absorbers – document all force calculations — need final plan for magnetic mapping with field sensors o mapping must go from spectrometer to detectors — FC schedule looks marginal o promptly evaluate alternative conductor options • H 2 R&D system — schedule has slipped to early 2008 due to other priorities – keep an eye on this one! • Absorbers — design work almost done at KEK o need funding to provide the actual components (~$65 K ea. ) October 10, 2007 Wrap-up and Action Items-Zisman 6

Cooling Channel Issues (2) • RF — define method to measure voltage at 1% level o will require beam-based measurements to achieve this — need further thought on required interlocks — consider NEG pumps for MICE — can we run CC and Lab G magnets together at MTA? o Green to evaluate force limitations — testing of high power amplifier to be done at Daresbury spring 2008 o making progress, but schedule slipping • Miscellaneous — must update infrastructure needs for project o Chris Nelson will collect/update o need vacuum guru – interlocks, monitoring, . . . o need controls expert October 10, 2007 Wrap-up and Action Items-Zisman 7

Detector Issues (1) • Understand 201 MHz RF backgrounds — MTA tests with Coupling Coil will tell us which regime we’ll be in o present indications are that we’ll be (barely) okay at 8 MV • CKOV — (schedule) problem coating mirrors o do we need thicker aerogel? • Tracker — get ready for cosmic ray testing — find “owner” for He windows and radiation shutter • TOFs — need means to align in situ o ± 1 mm tolerance October 10, 2007 Wrap-up and Action Items-Zisman 8

Detector Issues (2) • KL — good progress o expected at RAL in December • SW calorimeter — Trieste/Rome/Fermilab/Geneva group (Pietro Chimenti) has taken on o review cost and schedule when ready • Spectrometer solenoid — verify that quench forces on end plate have been accounted for — need to fiducialize magnets for alignment purposes o NIKEF should send someone to FNAL for initial measurements – delayed until January 2008 o must test radiation tolerance of sensors at MTA — who “owns” TOF cage? • Check quench forces for ALL systems October 10, 2007 Wrap-up and Action Items-Zisman 9

Simulation/Analysis Issues • Need to learn how to correlate particles with RF phase — could we use ISIS RF signal to develop/validate approach? • Want specification of what field maps are needed — e. g. , spectrometer solenoid • Define and document alignment tolerances (under way) • Can/should we keep TRD updated? — a parameter list would also be useful, especially to engineers • Should we do a “blind” analysis? October 10, 2007 Wrap-up and Action Items-Zisman 10

Controls/DAQ Issues (1) • Target software must be integrated with ISIS and MICE systems — need dip depth in our data stream • Splitter sticking out of crate looks vulnerable to damage — repackage, provide cage, or buy collision insurance • Send SS power supplies to Daresbury for testing with control system — use same supplies for FC module o possible in-kind contribution? October 10, 2007 Wrap-up and Action Items-Zisman 11

Controls/DAQ Issues (2) • Need “guru” as liaison between technical systems and controls group — having one person from each group is impractical • Need system manager to deal with keeping systems running, upgrades and backups, . . . — not full-time, but a critical role — could be a MICE contribution — pay from common fund? October 10, 2007 Wrap-up and Action Items-Zisman 12

Unresolved Issues • Can we get funds for Ishimoto’s absorber work? — Japan group has major proposal in that would cover this — pushing for renewed US-Japan funds for this o next round of negotiations starts in December • Do we have the “person-power” to cover experimental shifts? — and analyze the data in a timely way (“exploitation” phase) — several post-doc slots available but unfilled o keep looking! October 10, 2007 Wrap-up and Action Items-Zisman 13

Summary • We continue to make progress — the rush to get everything built and installed continues o we have had a few setbacks and continue to recover gracefully • There is still a lot to do — January commissioning will focus on o target o beam line o detectors • Welcome to Richard Apsimon and Andy Nichols — please cooperate with their requests in a complete and timely fashion October 10, 2007 Wrap-up and Action Items-Zisman 14