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m. apollonio

summary. MICE Beamline. m. apollonio. Beamline parallel session (June 1 st ): envisaged goals (Alain) assess readiness of the line magnet status (Ken) new target (Jason) optics (MA) diffuser (John) ( e ,P) matrix readiness. June 3 rd 2009. MICE CM24 - RAL. 2. 2.

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m. apollonio

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  1. summary MICE Beamline m. apollonio

  2. Beamline parallel session (June 1st): • envisaged goals (Alain) • assess readiness of the line magnet status (Ken) • new target (Jason) • optics (MA) • diffuser (John) • (e,P) matrix readiness June 3rd 2009 MICE CM24 - RAL 2 2

  3. envisaged goals magnet readiness target diffuser optics conclusions • STEPI: • setup optics for p rate, then m rate for every set-up needed for the (e,P) matrix • establish optimal p momentum setting. • understand m purity. • - optimize beam rate to beam loss. • STEP II: • commission tracker in beam • practice diffuser • precise emittance measurement • then all points of the (e,P) matrix. • In the process • -- establish alignment and possible need for correctors etc. • -- commission MICE DAQ, C&M, TOF2 & Lumi monitor (from A. Blondel) June 3rd 2009 MICE CM24 - RAL 3 3

  4. envisaged goals magnet readiness target diffuser optics conclusions Work Plan • 0. soak test • commission target • commission DKSol – operate at 500 mV beam loss. Begin with BL @ D1=D2 • Q1-3 + DKSol optimisation: maximise GVA1/TOF0 rate for Pp(TOF0)=350 MeV/c (record ISIS BLM + Lumi Mon) • e+ beam for calibrations P=100 MeV/c: use magic tables • re-establish a p beam with P=200 MeV/c  align beam • TOF0 calibrations done  commission (350 MeV/c pion/200 MeV/c muon) beam. Optimize on DKS excitation. Scan P(muon) • Develop 200 MeV/c muon beam with “6 mm emittance” beam setup. Evaluate beam parameters and emittance of muon beam at TOF1 with TOF0 and TOF1 (*) • Complete generation of beams for momentum-emittance matrix (*) evaluation of emittance in MICE requires STEPII June 3rd 2009 MICE CM24 - RAL 4 4

  5. envisaged goals magnet readiness target diffuser optics conclusions • conventional magnets (to do list) • Q1-2-3: • re-connect vacuum box / re-establish • water flow / test • D1 • re-positioning / piping connection / • electrical re-connection • D2 • in position: needs fine positioning / • pipe re-connection / electric re-connection • / pressure reducing valves fitting • Q4-5-6 • water and power connections / fit pressure • reducing valves • Q7-8-9 • ready to go • DK Solenoid • IT WORKS ! (M. Courthold, 2009 a.d.) [EUREKA! (Archimedes, circa 250 b.c.)] • tested at 5T (870 A) for an hour • max I = 1000 A • needs long run (24 hrs) at 5T • goal: being ready by end of August/beginning of September (tight!) • Conventional magnet system: • D2, Q6—Q9 will be re-established before the shutdown • Q1—Q3, D1 will be re-established during the shutdown • Decay solenoid: • Schedule to complete magnet testing and final acceptance running of Linde frig planned in detail • Plan includes preparation of documentation (from K. Longl) June 3rd 2009 MICE CM24 - RAL 5 5

  6. envisaged goals magnet readiness target diffuser optics conclusions • NEW TARGET production • impressive progress • still a lot to do • end of July to have assemblies ready • then tests • end of August readiness still very achievable • BUT tight ! (from J. Tarrant) June 3rd 2009 MICE CM24 - RAL 6 6

  7. envisaged goals magnet readiness target diffuser optics conclusions some mechanical changes to cope with: - air pressure / flow - weight control ! air-motor overruns need tests / understanding ASPIRATIONAL SCHEDULE to have diffuser tested in Oxford: 2 / 3 months (hols excluded) if NO nasty surprises (from J. Cobb) June 3rd 2009 MICE CM24 - RAL 7 7

  8. [fingers crossed] envisaged goals magnet readiness target diffuser optics conclusions “detectors come and go, please just let me know“ Q1 Q2 Q3 D1 Q4 Q5 Q6 Q7 Q8 Q9 D2 June 3rd 2009 MICE CM24 - RAL 8 8

  9. envisaged goals magnet readiness target diffuser optics conclusions Muon BeamLine: G4BL simulation – Q1.DS p + ------------ CALC_EMI ------------- + eNT= 0.196 mm rad sx = 4.77 cm sY = 4.55 cm bT = 38397 mm aT = -7.105 RADIUS = 86.73 mm eNx= 0.2448 mm rad bx = 32146 mm ax= 9.68 ex= 0.074 mm rad eNy= 0.1568 mm rad by = 45755 mm ay= -32.9 ey= 0.047 mm rad P=444.71 MeV/c Z=Q1DS rad rad X’ vs X Y’ vs Y mm mm Y vs X June 3rd 2009 MICE CM24 - RAL 9 9

  10. envisaged goals magnet readiness target diffuser optics conclusions Muon BeamLine: G4BL simulation – TOF0 X’ vs X Y vs X dP/P<10% |dP/P|>10% Y’ vs Y m + ------------ CALC_EMI ------------- + eTN= 2.91 mm rad sX = 4.51 cm sY = 7.02 cm bT = 2875 mm aT = 0.129 RADIUS = 91.4828342 mm eNx= 3.49 mm rad bx= 1400.4 mm ax= 0.489 eX=1.47 mm rad eNy= 2.43 mm rad by= 4867.7 mm ay= -0.392 eY=1.02 mm rad P=250 MeV/c Z=TOF0 June 3rd 2009 MICE CM24 - RAL 10 10

  11. envisaged goals magnet readiness target diffuser optics conclusions Muon BeamLine: G4BL simulation – TOF1 X’ vs X Y vs X dP/P<10% |dP/P|>10% Y’ vs Y m + ------------ CALC_EMI ------------- + eTN= 2.47 mm rad sX = 5.9 cm sY = 4.37 cm bT = 2334 mm aT = 0.86 RADIUS = 75.9 mm eNx= 2.60 bx= 2872 mm ax= 1.598 eNy= 2.35 by= 1727 mm ay= 0.039 P=223 MeV/c Z=TOF1 June 3rd 2009 MICE CM24 - RAL 11 11

  12. envisaged goals magnet readiness target diffuser optics conclusions Muon BeamLine: G4BL simulation – Diffuser X’ vs X Y vs X dP/P<10% |dP/P|>10% Y’ vs Y m + ------------ CALC_EMI ------------- + eN= 3.41 mm rad sX = 4.35 cm sY = 4.88 cm bT = 1250 mm aT = -0.0017 RADIUS = 65.3 mm ex= 3.76 mm rad bx= 1004 mm ax= 0.367 ey= 3.10 mm rad by= 1534 mm ay= -0.450 P=214 MeV/c Z=Diffuser June 3rd 2009 MICE CM24 - RAL 12 12

  13. envisaged goals magnet readiness target diffuser optics conclusions Optics: are we ready? (shutdown 17 Aug/1 Sept) 2Sept – 25 Oct - On Sept 2nd we don’t need a beam matched to … something - We can use optics for e=6 mm rad / P=214 MeV/c [STEPII] - Rescale it to other momenta to cover STEPI - later (>october) we need a properly matched beam for all the config. of STEPII [trk-solenoid + diffuser]  matrix completion - more work needed to tune DS-BL (Q4-9) to match MICE optics - we may want to test solenoid at B+/-dB to increase m rate 3 6 10 140 200 240 June 3rd 2009 MICE CM24 - RAL 13 13

  14. Q7 Q8 Q9 Q7 Q8 Q9 envisaged goals magnet readiness target diffuser optics conclusions are we ready? b STEP II sXY (a) well defined problem know b in solenoid know b at US-diffuser b-line tuned (e=6,10 mm rad, P=214 MeV/c) STEP I as case (a) but beam diverges due to absence of solenoid SUGGESTION: use case (a) tuning June 3rd 2009 MICE CM24 - RAL 14 14

  15. 2) beamline quadrupole tuning envisaged goals magnet readiness target diffuser optics conclusions 1) beamline momentum tuning m Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Dipole1 Dipole2 DK solenoid p fix D2 fix D1 Pp=444 MeV/c Pm=255 MeV/c Pm=214 MeV/c Pm=208 MeV/c June 3rd 2009 MICE CM24 - RAL 15 15

  16. envisaged goals magnet readiness target diffuser optics conclusions GA+Turtle Optimiser Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 m Dipole1 Dipole2 DK solenoid INPUT: beamline US section >>>>>>>>> p OUTPUT: Twiss parameters @ diffuser US face (+TOF1) • GA procedure • Define 6-genes genotypes: Q4-5-6-7-8-9 currents • Express it as a phenotype: the Twiss parameters at some Z’s • Evaluate phenotype’s fitness • Mate genotypes and produce new individuals • Choose the best & repeat for several cycles June 3rd 2009 MICE CM24 - RAL 16 16

  17. envisaged goals magnet readiness target diffuser optics conclusions b=78 cm a=0.2 T=3.0% b=132 cm a=0.4 T=3.5% June 2nd 2009 June 3rd 2009 MICE CM24 - RAL MICE CM24 - RAL 17 17

  18. envisaged goals magnet readiness target diffuser optics conclusions Summary • The successful commissioning of the beamline is a combination of • hardware and optics optimisation • Assume target is working • Assess magnet readiness • 5T to cover up to high Pm(MAX=240 MeV/c) • Ongoing work to complete STEPII matrix • Redefining p energy (350 @ TOF0 instead of 420) to cover all the cases • Optics for STEPI == STEPII • Detector readiness • assume TOF0,1 + GVA1 + Ckova,b + FLMons in place and alive • Preliminary Plan for September / October BL characterization worked out June 3rd 2009 MICE CM24 - RAL 18 18

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