MICE Funding Agency Committee Spokesperson’s remarks

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

MICE Funding Agency Committee

Spokesperson’s remarks

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)

MICE CM34 Alain Blondel

mProvisional 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 2018Step V run possible Q3 2017

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 monthsMost 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

LBNL

MICE CM3325 June 2012 - 5 -Spectrometer Solenoid Update Roy Preece Steve Virostek

Magnet During Training5+1 cryocooler design

Spectrometer solenoid

Spectrometer Solenoid 1 – status(1)

0. considerable increase of task force at LBNL, + Roy Preece (RAL) + Fermilab, Daresbury However Roy Preece left May 20121. 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 times3. Excellent thermal balance of magnet (5+1 cryocoolers!) : 4.5 Watts in reserve at 4K4. 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

LBNL

MICE VC 15023 August 2012 - 7 -Spectrometer Solenoid Update Steve Virostek LBNL

HTS Lead Resistances

HTS lead resistances measured over numerous training cyclesmagnet 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

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.

MICE Funding Agency Committee 2012-11-12 Alain Blondel 9

last quench: 17/09/2012

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

MICE Project Board IV 31-10-2012 Alain Blondel

1st 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

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 2012T.Bradshaw

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 GroupVicky BaylissVictoria BlackmoreJohn CobbMike CourtholdRoy PreeceMike 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 interlocksTurbo pumps, primary pumps, Gate valves (limit switches)MCB’s, RCB’s, Relays ……..and the list goes on

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

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

MICE Funding Agency Committee 2012-11-12 Alain Blondel

Step IV - RacksMICE magnetic field mitigationGlobal solution

MICE Funding Agency Committee 2012-11-12 Alain Blondel

Step IV - CompressorsMICE magnetic field mitigationGlobal solution

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 mitigationPlant room

MICE Funding Agency Committee 2012-11-12 Alain Blondel

Current / Future Work

To get good shielding horizontally: need continuous steel in azimuthal direction

GeometryTube of radius 1.2 mwall thickness 10 cmazimuthally -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 mitigationreturn yoke solution

MICE Funding Agency Committee 2012-11-12 Alain Blondel

Step VI Geometry

CC CCSpectrometer Spectrometer

Slide from Holger Witte presentation at CM34

FC

MICE magnetic field mitigationreturn yoke solution

MICE Funding Agency Committee 2012-11-12 Alain Blondel 21

Absorbers

LiqH2 SystemSuccessful test in August 2012 – satisfied goals & safety

proceduresCryogenic efficiency is goodControl system largely debugged

Integrated into MLCR controlsTemperature control

Heaters critical when H2 flow slowsHydride bed needs more instrumentation

next: Integration with AFC and LH2 vesselLiH absorber complete

At FermilabDOE field office working on shipping

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 monthsthen cosmic test (1 month) and shipping to RAL. Run Q2 2013

simulations

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 calibrationAutomated calibration

system being developed• David AdeyChris Heidt

No absorberAlignmentOptics studies

Solid absorber(s)LiH PlasticC, Al, Cu

LiH Wedge absorberEmittance exchange

Liq H2 absorber(full/empty)

Multiple scatteringEnergy loss Cooling

STEP IV EXPERIMENTS (2014-2015)NB timing of Liq H2 will depend on timing w.r.t. 6 month ISIS shut-down Aug’14 to Feb’15

MICE Funding Agency Committee 2012-11-12 Alain Blondel 25

Moving towards Step VI RF Cavities201 MHz Cavities

All complete - First cavity electro-polishedSingle cavity test stand completed & at FermilabAutomated actuator driver to tune cavity being developed

Full MICE 201 MHz RF production cavity test in MuCool Test Area at Fermilab

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

Coupling Coils

MICE Funding Agency Committee 2012-11-12 Alain Blondel 27

Coupling Coils II

First cold mass arrived from Qi Huan (Beijing) Sept 2012Completed 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

Fermilab Solenoid Test Facility

28MICE 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)

Coil Windingat QiHuan

Cover plate weldingat HIT

Coil Test Prep at LBNL

Dewar Test ofCoil at FNAL

Cryostat Sub-AssemblyFab at LBNL

Cryostat Assembly/Integrationat FNAL

RFCC Fit Upat FNAL

Ship to RAL forFinal Assembly

RF Cavities at LBNL

MICE Funding Agency Committee 2012-11-12 Alain Blondel 30

Moving towards Step VI RF Cavities

201 MHz CavitiesAll complete - First cavity electro-polishedSingle cavity test stand completed & at FermilabAutomated 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 fromKevin Ronald

MICE Funding Agency Committee 2012-11-12 Alain Blondel 31

Moving towards Step VI

Progressing on RF layoutNo coax under wallModified coax going over wall – simplifiedImproved 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)

MICE Funding Agency Committee 2012-11-12 Alain Blondel 32

RF Power Systems

Medium power amplifiersDaresbury Lab – 240 kW from first 4616 systemProcured needed tetrode amplifier system thru UMiss – operating

at 240 kWDL making significant progress refurbishing 2 other amplifiers

High power amplifiersFirst one – full power test using new TH116 Triode valve – JulyConnect up and taken gradually up to running level of 32 kVBoth amplifiers showing high gain and electrical-to-RF conversion

efficiencyAt 1.2 MW a resistor failed in part of 116 PS – upgraded in Sept?

Ongoing workControl & measurement of RF gradient and phase

Deadline – amplifier operational in MICE Hall – Sept 2013MICE Project Board - October 31, 2012 Alan Bross

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

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

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.

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.