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MICE Beamline

MICE Beamline. m. apollonio. 1. Beamline parallel session: understand the readiness of the beamline state of magnets with emphasis on DK solenoid state of new target diffuser optics knowledge of the beamline emittance rate (Lumi monitors?) FermiLab monitors (location)?

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MICE Beamline

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  1. MICE Beamline m. apollonio MICE CM24 - RAL 1

  2. Beamline parallel session: • understand thereadinessof the beamline • state of magnets with emphasis on DK solenoid • state of new target • diffuser • optics • knowledge of the beamline • emittance • rate (Lumi monitors?) • FermiLab monitors (location)? • state of other detectors: TOFs/GVAs? • discussion June 1st 2009 MICE CM24 - RAL 2 2

  3. Q1 Q2 Q3 D1 Q4 Q5 Q6 Q7 Q8 Q9 D2 MICE CM24 - RAL 3

  4. table to be updated during the session … MagnetReadiness MICE CM24 - RAL 4

  5. BeamLines Availability Reference Beam Line – muon (e,P=207 MeV/c) Beamlines for initial/calibration studies: from (a) with local momentum rescaling of the magnets [ with / without solenoid ] (infact we used the one with no DKsol for the aformentioned reasons) electron (@150 MeV/c)  used for TOF calibration pions (@ 300 MeV/c)  1st muons seen protons (@480 MeV/c)  1st estimate of primary intensity NB: need to introduce calib. current/field for DKsol April, 22 2009 UKNF09 - Lancaster MICE CM24 - RAL 5 5

  6. 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 MICE CM24 - RAL 6

  7. 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 = 2874.8618 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 MICE CM24 - RAL 7

  8. Muon BeamLine: G4BL simulation – TOF1 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 MICE CM24 - RAL 8

  9. Muon BeamLine: G4BL simulation – Diffuser 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 MICE CM24 - RAL 9

  10. FermiLab Monitors: confirm locations and readiness? Could be useful to determine beam alignment (together with TOF0/1) June 1st 2009 MICE CM24 - RAL 10 10

  11. Optics: are we ready? (shutdown 17 Aug/1 Sept) 2Sept – 25 Oct (see later talk for details) - 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.1] - Rescale it to other momenta to cover STEPI + STEPII.0 - later (towards end of year) we need a properly matched beam for all the config. of STEPII.1 [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 1st 2009 MICE CM24 - RAL 11 11

  12. 2) beamline quadrupole tuning 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 MICE CM24 - RAL 12

  13. Summary • Assume target is working • Assess magnet readiness • DKsol strongly wanted • 5T to cover up to high Pm(MAX=240 MeV/c) • if NO DKsol  back to situation of ’08 • Optics for STEPI/STEPII.0 should be fine as it is • Ongoing work to complete STEPII.1 matrix • Need to assess detector readiness • assume TOF0,1 + GVAs + FLMons are in place and alive MICE CM24 - RAL 13

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