Transcript of MICE Funding Agency Committee 2012-11-12 Alain Blondel 1 MICE Funding Agency Committee...
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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.