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MICE Funding Agency Committee 2012-11-12 Alain Blondel 1 MICE Funding Agency Committee Spokespersons remarks

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MICE Funding Agency Committee 2012-11-12 Alain Blondel MICE SCHEDULE update February 2012 V1 Q1 2013 Run date: Completed, submitted to publication (Tracker station and EMR run in 2012) Under construction: NB: target date 2016 STEP VI (may skip)

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MICE CM34 Alain Blondel Provisional MICE SCHEDULE update: October 2012 STEP I Q2 2014 till Q4 2015 STEP VI Run date: EMR run Q1-Q2 2013 Under construction: target date Q3 2018 Step V run possible Q3 2017

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 4 Comments on schedule A significant effort was dedicated by US management and UK management teams to generate a coordinated resource loaded schedule. Part of the shift in schedule is due to built in resource limitations, part to technical mishaps (which in turn impact resource-limited schedule) Step IV The breakdown of delays with respect to the previous (MPB3) schedule is as follows: + 4 months for warmups and retrainings of SS1 following the mishaps. + 2 months for full implementation of controls, monitoring and alarms + 2 months for surface shipping + 3x5 weeks for re-training the magnets at RAL Which totals up to ~12 months Most of this is the consequence of learning how the magnet behaves. Some recovery can be envisaged -- careful planning of shipping could recover part of 2 months -- running the end-coils at their operating current (rather than solenoid current) will possibly save time and helium on the trainings (trim Power Supply) -- considering if magnetic field measurements in situ may be postponed (risk?) But -- any new incident would cost at least 2 months -- magnetic field mitigation is not home-free yet

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LBNL MICE CM33 25 June 2012 - 5 -- 5 - Spectrometer Solenoid Update Roy Preece Steve Virostek Magnet During Training 5+1 cryocooler design Spectrometer solenoid

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Spectrometer Solenoid 1 status(1) 0. considerable increase of task force at LBNL, + Roy Preece (RAL) + Fermilab, Daresbury However Roy Preece left May 2012 1. first magnet was completed and closed mid April 2012. Cool-down started 22 May. 2. Helium shortage in the US! Fermilab came to the rescue several times 3. Excellent thermal balance of magnet (5+1 cryocoolers!) : 4.5 Watts in reserve at 4K 4. Magnet training started 14 June with a first quench at 185 A (nominal 270A) and after several training runs up to 245 A (on 3 July) which was the intermediate goal (90%) 5. During the training run on 3d July a HTS lead (coil E1) went normal-conducting 6. magnet warmed up to examine HTS leads 7. analysis showed that HTS lead had been slightly resistive M1 M2 E1 Center E2 NB realized that end coils E1, E2 were running at Center current instead of 20-40% lower

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LBNL MICE VC 150 23 August 2012 - 7 -- 7 - Spectrometer Solenoid Update Steve Virostek LBNL HTS Lead Resistances HTS lead resistances measured over numerous training cycles magnet was warmed up and lead was changed. worrisome leads will be changed at later staged by precaution. Failed Lead New Lead 10x better, but worrisome In the noise

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 8 Spectrometer Solenoid 1 status(2) 8. After exchange of HTS ead, cool down was complete on 9 Aug 2012. 9. training restarted (quench at lower current?) Magnet needs retraining after cool-downs! 10. magnet reached operating currents +1% on 17 September 2012 then quenched magnet acceptance test is 24 h at nominal current was not done. 11. after last quench, cold mass heater turned off, and controls did not restart pressure drop in magnet, implosion of a (deficient) pressure relief valve and contamination of magnet with air, blocking vent lines with ice. 12. Magnet warm up 13 will not restart until -- review of procedures, control and monitoring -- change of PRV, suspicious leads, etc -- implementation of trim power supplies to avoid excessive current in E1, E2. -- i.e. magnet fully operational. This is likely to be in Q1 2013 ; US group proactive. 14. meanwhile magnet 2 rebuild will be completed 15. present schedule foresees shipping in August 2013 of both magnets this is due to need to have magnet team at only one place at a time. Air freight investigated (cost!). Surface transport assumed (~2 months) some optimization still possible.

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 9 last quench: 17/09/2012

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MICE Project Board IV 31-10-2012 Alain Blondel 10 Magnet needs retraining after warm-ups Need to implement trim power supply for end coils E1, E2

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MICE Project Board IV 31-10-2012 Alain Blondel 1 st AFC Magnet at RAL 24 October 2012 Note: not an operational magnet yet! commissioning to be done at RAL . System set-up and operation check Leak check magnet under vacuum and pressure Pre-cooling with LN2 to 80-90K Cool-down with Helium to 4K Steady state thermal performance check zero boil off Cryocooler excess performance check Step by step current ramp to full current (Flip mode) o Thermal performance check Step by step current ramp to full current (Solenoid mode) o Thermal performance check

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Receipt and test at RAL reception of the magnet in the R9 test facility; cryocooler compressors in place, water and electrical supplies available. R9 has been cleared and tidied. The floor has been marked with the 5 gauss limit and the scaffolding and magnet supports are in place. Tesla have already secured adequate supplies of helium that should cover the commissioning. Once the magnet has been commissioned CERN will be performing a full field map. Installation of the He turret pipework Scaffolding from CM34 18 October 2012 T.Bradshaw

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 13 A MAJOR HURDLE: We have been waiting for magnets for a long time -- and soon we will have magnetic fields! Magnet Group Vicky Bayliss Victoria Blackmore John Cobb Mike Courthold Roy Preece Mike Zisman.... Group was formed in July 2011 after CM30 (Oxford) to study effect of magnetic field on Rung alarm at CM33 (Glasgow) intense work since Cryo cooler compressors. Power supplies, controls. PPS door interlocks Turbo pumps, primary pumps, Gate valves (limit switches) MCBs, RCBs, Relays ..and the list goes on

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MICE Funding Agency Committee 2012-11-12 Alain Blondel Issues 5 Gauss 100 Gauss 50 Gauss Original Compressor position Original Control Rack position Step IV Solenoid mode 240 MeV/C Beta 42cm The problem -- no return yokes on MICE magnets -- MICE hall shielding OK for Linac and ISIS, MICE control room -- local shielding would suck up magnetic field way beyond empty simulation

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 15 Magnetic field mitigation Solutions 1. Global (UK group): no major additional shielding, displace hardware away -- place racks behind north wall (in place of future RF power) -- place compressors on West wall (end side of experiment) -- apply shieding (mu-metal as appropriate) for things that cant move this is default solution at present can only work for step IV not for step VI 2. local (US groups): add return yoke to cooling channel -- still in calculation conceptual design phase but promising -- engineering effort, cost, mechanical issues in the hall, timing! concept can work also for step VI 3. possible useage of plant room would make a lot of problems easier! Will review situation in Jan 2013 and aim to decide to avoid futher delay to step IV Major work took place to list all sensitive equipment and evaluate impact of mag. fields on them to evaluate magnetic field in the hall in presence of magnetic masses

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MICE Funding Agency Committee 2012-11-12 Alain Blondel Step IV - Racks MICE magnetic field mitigation Global solution

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MICE Funding Agency Committee 2012-11-12 Alain Blondel Step IV - Compressors MICE magnetic field mitigation Global solution

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MICE Funding Agency Committee 2012-11-12 Alain Blondel Power and control racks behind North wall will need to move to accommodate RF amplifiers. Discussion of possibility of using ISIS plant room as a rack room underway. Additional compressors installed to the West wall structural aspects installed during Step IV mitigation. Partial return yolk concept applicable for next step. Step VI MICE magnetic field mitigation Plant room

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MICE Funding Agency Committee 2012-11-12 Alain Blondel Current / Future Work To get good shielding horizontally: need continuous steel in azimuthal direction Geometry Tube of radius 1.2 m wall thickness 10 cm azimuthally -50..50 weight: 30t 1.5 m 2 m R1.2 (Note: not to scale) Slide from Holger Witte presentation at CM34 MICE magnetic field mitigation return yoke solution

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MICE Funding Agency Committee 2012-11-12 Alain Blondel Step VI Geometry CC Spectrometer Slide from Holger Witte presentation at CM34 FC MICE magnetic field mitigation return yoke solution

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 21 Absorbers LiqH 2 System Successful test in August 2012 satisfied goals & safety procedures Cryogenic efficiency is good Control system largely debugged Integrated into MLCR controls Temperature control Heaters critical when H2 flow slows Hydride bed needs more instrumentation next: Integration with AFC and LH 2 vessel LiH absorber complete At Fermilab DOE field office working on shipping

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MICE Funding Agency Committee 2012-11-12 Alain Blondel EMR (Geneva, with help from FNAL, Milano/Como, Brunel) Expect construction to be complete in 3 months then cosmic test (1 month) and shipping to RAL. Run Q2 2013 simulations

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MICE Funding Agency Committee 2012-11-12 Alain Blondel Tracker Single Station Test (May 2012) Successful test with spare station (3 view) Timed in with ISIS RF important for DAQ Efficiencies look good Some known dead channels Some issues with calibration Automated calibration system being developed David Adey Chris Heidt

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No absorber Alignment Optics studies Solid absorber(s) LiH Plastic C, Al, Cu LiH Wedge absorber Emittance exchange Liq H 2 absorber (full/empty) Multiple scattering Energy loss Cooling STEP IV EXPERIMENTS (2014-2015) NB timing of Liq H 2 will depend on timing w.r.t. 6 month ISIS shut-down Aug14 to Feb15

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 25 Moving towards Step VI RF Cavities 201 MHz Cavities All complete - First cavity electro-polished Single cavity test stand completed & at Fermilab Automated actuator driver to tune cavity being developed Full MICE 201 MHz RF production cavity test in MuCool Test Area at Fermilab

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 26 Coupling Coils

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 27 Coupling Coils II First cold mass arrived from Qi Huan (Beijing) Sept 2012 Completed at LBNL Cooling tubes welded, Epoxy impregnation, LHe reservoir, QP circuitry However, cooling tube developed leak Repair plan being developed to satisfy vacuum vessel code When OK will send to fermilab for testing Test of cold mass + winding review at Qi Huan will decide winding of 3 more cold masses. Construction plan for 3 coupling coils MUCOOL, MICE1, MICE2 set up MICE Project Board - October 31, 2012 Alan Bross

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Fermilab Solenoid Test Facility 28 MICE Project Board - October 31, 2012 Alan Bross

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Project Task Flow August 30, 2012 DOE Review of Muon Accelerator Program (FNAL, August 29 - 31, 2012) 29 Coil Winding at QiHuan Cover plate welding at HIT Coil Test Prep at LBNL Dewar Test of Coil at FNAL Cryostat Sub-Assembly Fab at LBNL Cryostat Assembly/Integration at FNAL RFCC Fit Up at FNAL Ship to RAL for Final Assembly RF Cavities at LBNL

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 30 Moving towards Step VI RF Cavities 201 MHz Cavities All complete - First cavity electro-polished Single cavity test stand completed & at Fermilab Automated actuator driver to tune cavity being developed Full MICE 201 MHz RF production cavity test in MuCool Test Area at Fermilab MICE Project Board - October 31, 2012 Alan Bross More from Kevin Ronald

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 31 Moving towards Step VI Progressing on RF layout No coax under wall Modified coax going over wall simplified Improved access for amplifier installation MICE Project Board - October 31, 2012 Alan Bross RF project has a WBS level 2 manager and project leader, Kevin Ronald (Strathclyde)

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 32 RF Power Systems Medium power amplifiers Daresbury Lab 240 kW from first 4616 system Procured needed tetrode amplifier system thru UMiss operating at 240 kW DL making significant progress refurbishing 2 other amplifiers High power amplifiers First one full power test using new TH116 Triode valve July Connect up and taken gradually up to running level of 32 kV Both amplifiers showing high gain and electrical-to-RF conversion efficiency At 1.2 MW a resistor failed in part of 116 PS upgraded in Sept? Ongoing work Control & measurement of RF gradient and phase Deadline amplifier operational in MICE Hall Sept 2013 MICE Project Board - October 31, 2012 Alan Bross

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 33 Step VI to run in second half of 2018 Analysis of the longer time estimate with respect to MPB3 is as follows: -- the test of the first cold mass has been delayed by 6 months. -- the preparation of fabrication drawings for the cryostats is almost one year later. -- the construction time for the cryostats is longer (9 months instead of 6) -- the integration time is also longer (15 months instead of 12) Spectrometer solenoid incidents have had an impact of nearly a year. The rest is resource management. Time recovery possibilities for step VI involve -- use of MUCOOL magnet as MICE CC 2. This requires -- MUCOOL program to be completed in 18 Months -- MUCOOL magnet to be operational with cryocoolers. -- could save O(>6 months) and a lot of resources -- new collaborator performs e.g. integration task for the MICE magnets -- discussion has started with the CERN ATLAS magnet group, -- careful planning and job description needed -- preferred plan to perform construction of 2 (or 3) CC manets at FNAL needs committment from FNAL. Step V could be assembled to run in the second half of 2017 would delay step VI further

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 34 RISKS on MICE 0. Very stretched funding: any technical incident delay 1. Manpower issues danger of attrition of the project if it lengthens -- lose expertise of people moving on -- have to re-learn and this leads to a) time loss and b) mistakes -- lose enthusiasm of volunteer institutes 2. controls monitoring, alarms (C&M) as an acute example of point 1, C&M = last protection against damaging very expensive MICE equipment, setbacks and delays. each component of MICE should have one clearly identified person responsible for controls, monitoring and alarms (and not only for providing the hardware for it). At this moment the responsibility rests on one person only for the whole of MICE 3. MICE magnet system The transition from single magnets to full magnet system may be painful and associated with a number of glitches and quenches. We have added 5 weeks for retraining of the magnets, but we are anxious to see whether it happens at each time we have to change the magnetic configuration, such as (and in particular) the change from flip to non-flip mode

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 35 4. Magnetic field mitigation -- Step IV baseline global shielding (GS) to relocate the sensitive equipment along the west hall (downstream of MICE) or behind the north shielding wall (where the RF should eventually go). risk to overlook some equipment that would turn out to be critical. -- return yoke solution is not engineered yet and could lead to significant expenses and needed for step VI -- recommended to obtain from ISIS usage of the plant room next to the MICE hall is less risky. 5. Helium availability 6. RF project: -- T116 availability remains a threat -- expertise in the high power part of the amplifiers is scarce. It is important to establish a network of relations with ISIS and CERN to allow for occasional consultancy -- RF in magnetic field is not a solved problem and could still cause a bad surprise either in the cavities themselves or in the couplers etc mitigation, operation of MICE RF cavity in the fringe field of MTA (2013) and MUCOOL testing program with full size magnet in 2015 7. Lack of staff on project for operations, particularly with requisite accelerator operations experience for operation of the cooling channel, magnets and RF cavities. The operation-dedicated staff is at this moment not funded.

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MICE Funding Agency Committee 2012-11-12 Alain Blondel 36 Conclusions 1. There is great progress all over MICE (LH2, DAQ, FC,) 2. We have had a serious setback in the schedule with the Spectrometer solenoid yet SS1 has reached full field (but is not operational yet) 3. MICE (UK+US) have produced a resource loaded schedule to step VI. This is big progress! 4. This (2. + 3.) places Step VI at the limit of timeliness in 2018. Still step VI and its experimental richness and thourough testing abilities is the goal of the experiment. We could consider having a stop-over at stepV but only if we absolutely have to now is *not* the moment to decide. 5. There are a few ideas on how to improve the schedule within the envelope. 6. There are many risks to the schedule most of which related to the lack of manpower and resources. Any glitch leads to delays. 7. The most efficient solution remains application of appropriate and well targeted influx of manpower: highly beneficial and we believe economical in the long run. 8. The MICE team remains proudly dedicated to achieving the first demonstration of ionization cooling.