MICE CM at OSAKA Alain Blondel, August 1-4 2004 1 MICE collaboration meeting at OSAKA (thanks to...

1MICE CM at OSAKA Alain Blondel, August 1-4 2004

MICE collaboration meeting at OSAKA(thanks to Mike Zisman, Makoto Yoshida, and Koji Yoshimura)

1. Recall: aims of the collaboration until RAL meeting in October

2. Cost of MICE

3. Agenda of this meeting


following the collaboration meeting at CERN the MICE executive board met on1 April 2004 and discussed the orientations and aims of the MICE collaboration in the next months, until the RAL collaboration meeting 27-30 October 2004.

The following were outlined. (the list is not exhaustive and new things keep coming up!)

1. consolidation of the work done until March 2004

A. Finish the Technical Reference Document (‘rebaselining’). From there onwards we should use the change control procedures to suggest, design and implement improvements to the design of MICE.

B. Finalize a more refined evaluation of cost estimates including two scenarios: a. what we think we could do right-now using solutions that are at hand. b. what we hope to be able to achieve with further work

The aim being to be able to do better at lower cost, if possible. The line between categories a. and b. will evolve with time, normally this difference should shrink with time.


2. Technical choices to be made.A certain number of technical choices need to be made following the progress that has been made up to the collaboration meeting (these so far enter in category 1.b. above) 2.a finalize decision on cryo-coolers. 2.b finalize RF system design and costing. 2.c finalize validation of tracker. It is believed that these milestones can be achieved before or at the collaboration meeting in OSAKA in summer 2004 (2-4 August) for approbation at the collaboration board at that time. (nb: there will be reports on all these issues. I believe much progress has been achieved on all three. We may not need formal decisions but endorsement) There are several other important issues for which a final solution must be found on the same time scale, among which the need for, and design of, the shielding for the downstream detectors, as well as how the experiment is supported and the forces absorbed.


3. Understand the measurement of emittance to the aimed precision of 10-3. This requires 3.a a full and operational simulation of the experiment 3.b design of monitoring systems that allow control of the physics parameters of the experiment to the desired accuracy. (where do we stand with this? I think there is great progress on beam design and simulations, but do we have a set of programs that allows those interested in the collaboration to simulate what they need?)

This programme of work is a major enterprise and will require collective focus until the end of October 2004. It is suggested to start from the table of quantities to be monitored and controlled The proposed time table is as follows.-- for the meeting in OSAKA each working group should propose one or several ways by which the quantities can be conceptually controlled.

-- for the RAL meeting a more detailed design should be proposed so as to include the controls in the final designs.


About the cost and funding of MICE

(with blessing of the Exec. Board) there an ad-hoc team composed of MICE spokesperson, deputy and Technical coordinatormajor responsibles for funding requests AB, Zisman, Drumm, Kaplan, Kuno, Long, Palladino aka the 'Silwood Park Group'

sat together (one week end plus two afternoon long phone meetings) to understand 1. what is the cost of MICE 2. what is the level a which we have so far achieved provision in-kind elements and funding


Baselines:

1. The material cost of MICE stage VI (no contingency) is 11 M£this is our present best estimate and is a solid number. This is very consistent with the LOI and proposal of 17.8 and 19.2 M€ resp. To obtain the project cost one should add contingency, escalation and the necessary funding for personnel + travel. the present estimate is 25 M£.

2. The cost of stage V is 9.5 M£

3. Savings announced in the proposal were realized RF power sourcesPSI solenoidMultiplexing of Scifi in the proposal, these represent value at the level of 8M€ and some more are possible (electronics from D0; will be borrowed for KEK test…)

4. The funding has been identified for more than 50% of the project cost.so far: UK contribution at 12.5 M£ Japan contribution of 100 k$/year (US-Japan) CH contribution at 50 KCHF/Yr + 1 MA + 1 PhDSupport from US Muon collaboration for R&D (MUCOOL) and limited possibility for HW.


- STEP I: spring 2006

STEP II: summer 2006

STEP III: winter 2007

STEP IV: spring 2007

STEP V: fall 2007

STEP VI: 2008


5. The funding falls short of the requested amounts, and does not allowyet to fund the experiment to stage V (which is the minimum) several funding requests have been reviewed with great outcome,but 'there is no available money for new projects'. Will keep trying.

6. The main piece missing: we still do not know how to fund the spectrometer solenoids! (Ken Peach and AB visited INFN on 8 June result: 'encouragement to submit a proposal' -- which is being prepared starting with a EOI)

7. we need to fight our case further.

e.g. this effect we wrote a brief for the NSF emphasizing --the unique physics case, --the overall cost reduction of neutrino factory-- the importance of MICE in this programme. Will be distributed.


Controlling MICE

A preliminary set of control measurements and experimentsPhysics point of view


Experimental Systematics

Mice fiction in 2007 or so. Mice fiction in 2007 or so.

. MICE measures e.g. (. MICE measures e.g. (outout inin))exp exp = 0.904 = 0.904 ± 0.001 (statistical)± 0.001 (statistical)

and compares with (and compares with (outout inin))theory. theory. = 0.895 = 0.895

and tries to understand the difference.

SIMULATIONSIMULATION

REALITYREALITY

MEASUREMENTMEASUREMENT

theory systematics: modeling of cooling cell is not as reality

experimental systematics:modeling of spectrometers is not as reality


quantity design tol. monitoring with beam

beam optics

transfer matrix: par ex.(pt, pL, phi, x0 , y0)in <-> (pt, pL, phi, x0, y0)out

measure with no RF and empty absorbers each time one changes the mag set-up.

positions of coils

some mm alignment

currents some 10-4 amp-meter

mag field some 10-4 mag probes

amount of absorber (in g/cm2)

310-3 = 1mm/35 cm

density through T & Pthickness how???

measure energy loss of muons for 0 absorber, 1 absorber, two absorberswith RF off.

RF field 3 10-3 measure E to E/E= 3.10-3

measure energy of muons vs RF phase before and after cooling channel

What needs to be controlled from the point of view of the physics?How can we control it by design tolerances / by monitoring / with the beam itself


example of such an experiment Eout -Ein (GeV)

simulated by Janot in 2001this measures ERF(t) (nb: this was at 88 MHz)


Start-up systematics chart

QuantityMICE organs

Tolerance Monitor Beam measurement (suggested) Responsible

Channelcount

Beam ISIS beamtargetmagnetsCollimatorsDiffuser…

TBDAlignment with expt?

SettingsBeam instrumentation(profile & halo monitors ?)others

Measure beam averages and correlations, composition and emittance With/without diffuser

Drumm/Tilley

Beam detectors

TOFCherenkov

TBD Volts, currentsOccupancies, Dead channelsothers

Measure TOF vs nominal beam momentum Calibrate in configuration with electrons in beam ?

Palladino/ Bonesini Summers

Emittancetracker

<<10-3

TBD Compare one tracker to the other with empty abs and no RF

Bross/ Long

PID

10-3

TBD

Palladino/BonesiniGregoireTortora

DE/dX Hydrogen

absorberA few 10-3 Temperature

PressurethicknessOthers

Measure energy difference in configuration without RF and with full absorber(s)

Zisman Wing LauMACCIshimoto

E RF system A few 10-3 Volts

PhasesTemps

Measure energy of outgoing muons vs phase or with/without RF

Zisman Derun Li

optics positions of coilsinternal survey

some mm ISIS alignementsystem position monitors?

transfer matrix: (pt, pL, phi, x0 , y0)in <-> (pt, pL, phi, x0, y0)out

measure with no RF and empty absorbers each time one changes the magnetic set-up.

Green /Black

currents few 10-4 amp-meter Zisman / Green

mag field

some 10-4

~ mag probes temp probes

Zisman/Green / Linde


meeting agenda (thanks to M. Zisman) today


7:30

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