1 MICE Report to the Oversight Committee February 2008 Ken Long, Andy Nichols and Richard Apsimon 25th Feb 2008 MICE Phase 1 Status MICE Phase 2 Overview.

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MICE Report to the Oversight Committee

February 2008

•Ken Long, Andy Nichols and Richard Apsimon•25th Feb 2008

MICE Phase 1 StatusMICE Phase 2 OverviewProgress from the MICE Collaboration since the last OsC meeting

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Phase I beamline in MICE Hall

•Shielding complete & D2 positioned•Since then:-

D2 fully connected PSI Decay solenoid installed

• With shielding• Aligned

Q4,5 & 6 installed All girder boxes built & installed Power & interlocks connected Water being finished Alignment complete

•Still to do Cherenkov mounted

• Stand required modification ToF0 delayed. Due early March

• Install with Cherenkov Q4-6 water and final tests Q1 power supply due last week PPS to be connected – this week

Sept 2007

Feb 2008

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MICE Target (in ISIS)

•Target & Controls . Pre-installation Stepper motor & interlocks ok. Target actuated 1000 times ok. Good vacuum (3.3×10–7 mbar). Absolute position w.r.t. beam pipe measured.

•Moved to ISIS and connected Sunday 20th Several damaged fibres discovered. (Poor

installation) Optics (approximately) set up. Stepper motor & interlocks checked. Target raised & lowered several times. Operation from MICE LCR difficult without network.

•Some work remaining for Installed Target Adjustment of optical amplifiers, interlock

programming, gate valve to be open, PPS ………. Stepper motor control under investigation at DL

•and, of course, permission from ISIS to operate!

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Secondary MICE Target

•Actuator & electronics (almost) completed & tested in Sheffield – 50,000 pulses.•To RAL 13th February and re-assembled in R78.

Unusual pulse-to-pulse variation. Failed after ~600 pulses. One coil (of 24) found shorted to ground & burnt out.

• Internal ground not connected in Sheffield test! Spare stator installed New welded seals at Daresbury last week Brought back to RAL immediately (untested.)

• All electronics now at RAL. Problems still exist so has now be taken back to Sheffield

for further investigation. – see talk by Andy Nichols for latest news

N.B. Stator currently in ISIS had done >2M pulses ok.•Future – investigating better quality insulation (double layer?) with manufacturer. •Need new QA procedures for coil insulation.

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Work in ISIS vault during Xmas shutdown

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Phase I beamline in MICE Hall

•Beam position Monitors Temporary solution from Imperial Installed and tested

• Crosstalk & background

•Upstream beamline Q1,2,3 , D1 connected to water & power &

interlocks New quad stand built & installed New vacuum box installed in D1 New MICE Target vacuum vessel

•Decay Solenoid Progress now dependent on problems with

Linde plant (more later)• Defective turbines went back to Linde• Re-commissioning will resume this week• Scaffolding has been erected in DSA• After test. Reconnect transfer line to solenoid –

short shutdown in March? (DeMaCo)

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Phase I beamline in MICE Hall

•D2, Q4-6, Cerenkov & ToF D2 is connected to power & water Q4,5,6 are connected to power and polarity OK (No water yet)

• DSA access barred & flanges not ready. Cerenkovs ready at RAL – since last year

• two ready to install The Cerenkov stand arrived in time.

• 150mm too low despite being reviewed……Need access to DSA ToF0 counters under test with cosmics in Milano

• Important device for Step 1 (segmentation, pulse height, timing) ToF1 will be tested afterwards – remaining PMTs arrive end March ToF2 start assembly probably mid April-May

•Q7, 8, 9 Q7 – Completed & finished test in R6 Q8 – Also under test in R6 Q9 – only manifold refurbishment outstanding Magnets & services finished by 10th March

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Beamline & PPS•PPS

PPS in the DSA. • Final design review for the fence, roof and fire escape to be held

15/2/08• Work to be carried out in the May shutdown

PPS racks are complete and in position in MLCR• a small number of wiring modifications remain to be done

Majority of PPS hardware needed for DSA installation has been purchased

• Installation of PPS hardware and wiring between it and the PPS racks has commenced

• Drawings detailing wiring from racks to Hall equipment remain to be done

• Need final Hall search route to be agreed between ISIS and MICE (ongoing)

Local technical engineering help identified at RAL• This is working well• Better coordination between DL, RAL and contract electricians

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DSA, radiation safety and PPS

Search Plan is emerging……

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Linde refrigeration

•Spec:- 66W @ 4K (56Wsolenoid +

10Wtransfer) In November we saw about 51W + 10W

• Managed to cool decay solenoid to ~20K– Ran out of time, not cooling

• Problem ‘traced’ to missing insulators Jan 08, a reduction to 47W + 10W

• Problem now believed to be turbines– Evidence of carbon / graphite dust– Bearing failure?

• Turbines due back last week• Engineer ready to re-fit & re-test

We trust that this the end of the problem. Scaffolding built around decay solenoid Gas rack and piping ready Need access to DSA and permission to

dismantle transfer line. DeMaCo will return to re-install transfer

line into DSA 17th March.

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DAQ controls and monitoring•DAQ

•Hardware is at RALHardware is at RAL•There is a technical design for There is a technical design for Trigger•DAQ Rack layout available, will DAQ Rack layout available, will need additional iteration•FEE electronics for TOF and EMCAL is readyFEE electronics for TOF and EMCAL is ready

•Cable path for TOF still to be •minimized (impacts performance!)

•Monitoring: (Brian Martlew) (Brian Martlew)•EPICS framework is readyEPICS framework is ready

•Network:•All network switches/routers in placeAll network switches/routers in place•Configuration by RAL network group Configuration by RAL network group but still not working. being investigated.but still not working. being investigated.•Still waiting for network cable installation.Still waiting for network cable installation.

•URGENT!

EPICSConsoles

& ServersNetwor

k

GUIs

ArchivingPlottin

g

H2 Syste

m

PPS??

DAQ System

Magnet power

supplies

Target

Beamline

Monitors

Tracker

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Spectrometer solenoids I

II

Delay due to cold mass support issue will arrive at RAL 15 May 08/ 31 Aug 08

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Phase II Overview

•Step III spool piece (Uni Geneva) Spool piece for step III.1 Absorber size is 70 mm X 520 mm

(250mm diameter) Solenoid 2 will be recessed by 4 cm.

• Will lose some focusing possibility, gain in size of cooling effect to be measured

•SW (Sandwich Calorimeter) Construction & tests of the prototype

were successful• May bring to RAL to include in cosmic

test stand. FEE and final design understudy Aim is to produce it for < 70,000 Euro Uses Hamamatsu multi-anode PMTs New longitudinal segmentation has

been agreed

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Phase II Overview

•AFC Module: Magnet status This has been covered elsewhere Critical issue, delays are driving the schedule

•AFC Module: Liq H2 system status Cryostat body, top plate and absorber base plate

completed. Condenser components in manufacture Work on the solenoid and Linde refrigerator

installation has taken priority but the work at the suppliers is going well.

Gas panel complete latest June Will conduct initial tests with He (in cryo Lab) We are reviewing schedule but it looks as though the

ventilation system in the hall will not be installed before September

•AFC module Liquid H2 Absorber status KEK design finished MICE Absorber Design by MIRAPRO

• Restart absorber design and cost estimation • Order ~May, 08, + 3 month delivery to KEK

MICE Test Cryostat at KEK Superfluid L-He Absorber R&D at KEK

• Test absorber was designed and fabricated

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Phase II Overview

•RF Cavity Design & construction

Based on the design of 201-MHz cavity for MUCOOL

Cavity body• Ports for power coupler, vacuum

and probes RF power loop coupler and ceramic

RF window Curved Beryllium window

• Modified design to better control silver alloy flow during the brazing

Tuners Interface and integration with RFCC

module Design and Fabrication Plan Design review ~ May 2008 Schedule has been developed (~

by early 2010)

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Phase II Overview

•Coupling Coils (Harbin)•The formal collaboration MOU between LBNL and HIT

The first materials (10km SC conductors, Stycast epoxy, Kapton film, fibreglass cloth, 12 cold diodes etc.) from LBNL arrives Feb.

Tests should be carried out before the winding of coupling coils and fabrication of coupling magnet system.

Performance of SC joints and cold diodes at low temp. and magnetic field, etc.

Winding and cryo-test of test coils

•Construction of cryo-test system To be finished by mid-April.

•Winding of the first MuCool coil To start from this May.

•Design of the support stand for the MuCool RFCC module at MTA/Fermilab

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Phase II Overview

•RF Power refurbishment•Amplifier refurbishment at CERN almost complete

HT Line Installation Mid March Fabrication of PCB Mid March Test of Water Circuit April 2008 Test of Filament Circuit April 2008 Delivery DL or RAL (?) May 2008

•Amplifier refurbishment at DL Large amplifier rebuild continuing HT power supply components are arriving but this will not be

ready until June/July 08 Amplifier needs testing to prove 2MW possible with single 9

inch output Likely modify amplifier to two 6 inch outputs ready for MICE

experiment SF6 insulating gas will be needed in coax’s

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Parts cutting goes on (~60% completed)Stand is designed

MICE Diffuser (Oxford)

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MUCOOL Cavity Review

• Design and engineering at LBNL• Half shells spun at Acme in Minnesota • Parts made in Univ. of Mississippi and LBNL• E-beam welding & port-pulling, cleaning and EP at J-Lab, NASA• Coupler tests at SNS, Oak Ridge National Lab• Final assembly and high power tests at MTA, FNAL (March-2006) and reached 16-MV/m without external magnetic field

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Finances

•EU: Transnational Access application as part of EUCARD Submitted 22/2/2008 Unlikely to deliver much money because of over-subscription. Most common view is that the result will not justify the effort

involved!•STFC:

N. McCubbin/J. Womersley agreed £20k/yr to help collaborators from ‘less-favoured nations’ come to RAL for MICE

• N.McCubbin holds the budget•Common Fund

The Common Fund questionnaires have been sent to University / Funding agency representatives

• Replies received from all and invoices being sent (£3k/PhD) Collaboration Board has agreed a document outlining the uses

to which the Common Fund can be put. Need formally to agree scope of Common Fund with STFC P.M. working within STFC to complete agreements with

relevant ‘officers’

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Status of the MICE “Common Fund”•“The Fund will be used to share the cost of mounting the experiment at RAL equitably between the collaborators.•Administration……..split between

RAL Particle Physics Dept. “Business Unit” Financial Office ISIS User’s Office List of things ISIS UO will NOT help with….

• visitor’s ID Form, funding form • signing powers for necessary Project Codes• site passes, visa/ work permit letter• organising offices and phone numbers• dealing with induction training (ISIS, CDM, Safety)

List of things ISIS UO will help with….• Assist in finding accommodation (short and long term).

– Help might vary depending on country of origin and on level of spoken & written English

• Advice on general matters (bank accounts etc.)• Advice on transport.

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Overview of funding for MICE Phase II•US:

Significant increase in support from DOE and NSF last (this) FY has advanced procurement of items for Phase II (cavities, coupling coils)

Strongly positive review from MuTAC Some concern that present budget problems may have an impact

•Japan: Bid for funding for MICE to be submitted Some optimism about likely outcome expressed

•China: Will fabricate CC in collaboration with NFMCC Funding from HIST granted for construction: No travel support

•Switzerland: GVA: Support for DAQ, trigger, ToF PMTs and personnel.

Through Sofia also support for PId electronics and personnel Now seeking support for contribution to SW CERN: RF amplifier refurbishment: nearing completion

•Italy: 5 institutes INFN NTA approval for MICE now granted; resources for ToF0,1,KL

released Great tenacity and resourcefulness: ….so long without these resources

•UK: STFC budget problems likely to imply non-optimal funding profile for

Phase II Consequence is delay in steps IV and V

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Project Milestones – progress since last OsC

Total # milestones 147100.0%

Complete at 9/07 74 50.3 %

Therefore # remaining 73 49.7 %

Of these 49.7% we have……..

Completed by 2/08 41 27.9%Not complete but unchanged 14 9.5%Milestone now within 30 days 2 1.4%Milestone past and not complete 16 10.9%

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Project Milestones – progress since last OsC

Milestones remaining after OsC 9/07

Not complete but unchanged

Milestone now within 30 days

Milestone past and not complete

Completed by 2/08

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Project Milestones – progress since last OsC

•Not complete but unchanged (14)• 7 will finish by 31/3/08• 3 due to finish at end of Phase I infrastructure• 4 are part of Phase II

•Milestone now within 30 days (2) • Linde refrigeration – before 31/3/08

•Milestone past and not complete (16)• 1 finished since writing paper• 6 will finish by 31/3/08• 8 due to finish at end of Phase I infrastructure• 1 is part of Phase II

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MICE Commissioning Plans•Need to complete work before the first dip of the MICE target•These include (but not limited to):-

Complete power supply and magnet services (water/electrical/interlocks)

Certification of power supplies. Direct checks on klixons and validation of magnet klixon interlock

circuits. Full magnet circuit polarity checks. Full power soak tests - particularly for dipole 1, and field at saturation. Positioning of beam profile monitors & available MICE PIDs. Installation of MICE hall radiation monitors. Opening of MICE target gate-valve.

•Some of the above need access to the ISIS synchrotron or DSA. •Once hardware is enabled and ISIS has given permission:•The main steps for these systems are given below:-1. Target

Target out of beam:- Pre-activation & basic radiation measurements. Target pulsing out of beam to rehearse operations. ie. synchronisation

with ISIS signals, position stability, control etc. Insertion of target:- Shallow dip: above checks & beam loss reproducibility. Insert towards nominal depth or loss limit. Determine loss versus depth. Crude production measurements & post activation/radiation

measurements..

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MICE Commissioning Plans

2. Beamline•The beamline will be switched on in stages. It is planned to use settings which are optimised for protons initially due to the high rates….. first opportunity to:-

Exercise the beamline detector systems & beamline slow controls. Make comparison with the beamline physics model to isolate errors Make more refined estimates of protons on target to extrapolate to

final muon rates.•This requires the following steps:-

Dipoles on. Set basic horizontal alignment. Measure vertical alignment of target & beamline, set to optimum. Confirm action of quadrupoles 1-3, and setup as design. Find horizontal alignment of the downstream beamline with Q4-6. Confirm action of quadrupoles 4-6, and setup as design. Estimate protons on target using Ckov a&b & beamline monitors

•Radiation surveys in the MICE hall will be completed during the process.•Some of this work will be revisited to commission decay solenoid and the final triplet elements Q7-9.•We may also attempt to maximise the flux or measure the effect of vertical target/beamline misalignments on the optics.

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MICE Commissioning Plans

3. MICE PID calibration & particle production.•Beams requested for the MICE PIDs for calibration and commissioning purposes.

(i) beams with high electron content – in the region of 50-100MeV/c (ii) beams of positive or negative pions at ~500MeV/c.

•Thereafter, more refined estimates of particle production from the target.

Use these in any discussion with ISIS regarding deeper target dips to produce higher rates.

4. Muon Beamline setup.•With the target, beamline and detector systems commissioned, the first design goal is a matched 6π mm rad, 200MeV/c muon beam.

Begin with negative polarity beams to aid setup. Set up/downstream beamline for ~260MeV/c pions. Setup alignment Scale upstream section to ~444MeV/c pions, downstream fixed Measure downstream transmission, misalignment. Measure natural emittance at tracker (3 tracker planes) Calculate matched beam sizes Optimise downstream optics for beamsizes/divergences at tracker. With spectrometer solenoid available, a direct observation and control

of the emittance and match will be possible.