1April, 22 2009UKNF09 - Lancaster1 MICE Beamline m. apollonio.

1April, 22 2009 UKNF09 - Lancaster 1

MICE Beamlinem. apollonio

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BeamLines Availability

April, 22 2009 UKNF09 - Lancaster

P0 (MeV/c)195 WITH WITHOUT OVER

SOLENOID SOLENOID CURRENTMUON Ploc (MeV/c)

Q1 191.92 48.41 41.14

PTOF0 (MeV/c) Q2 191.66 60.43 75.19

182.31 Q3 191.41 42.01 45.99

D1 191.15 144.01 143.88

Sol 190.88 NA NA I > I_MAX

D2 188.54 75.34 72.20

Q4 186.80 124.98 124.98

Q5 186.15 167.02 167.02

Q6 185.49 110.56 110.56

Q7 159.89 104.64 104.64

Q8 159.52 158.19 158.19

Q9 158.89 134.86 134.86

OPTICS

CURRENT (A)

INSTRUCTIONS:a) insert initial momentum P0 b) adjust the value to match the P at D1 (red box)c) read the currents out of the relevant final column (SOLENOID / NO SOLENOID)

(b)

(c)

(a)

0

50

100

150

200

250

0 5000 10000 15000 20000 25000 30000

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 aformetntioned reasons)electron (@150 MeV/c) used for TOF calibrationpions (@ 300 MeV/c) 1st muons seen protons (@480 MeV/c) 1st estimate of primary intensity

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Target Studies


25 deg

Q1 acceptanceORBIT simulation:Beam Loss in ISIS

A. Dobbs

production in the first q-pole(G4Beamline)

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TOF Analysis to determine Beam Parameters:- x / y- mittance- x / y, x / y

see Mark’s Talk

BeamLines Analysis


5

search for Q4-5-6 & Q7-8-9 currents to match optics at theu.s. face of the diffuser

for every chosen [3,6,10] mm rad (norm.)

at every defined P = [140,200,240] (MeV/c)

BeamLine Completion: tuning for all (,P)


6April, 22 2009 UKNF09 - Lancaster

D1

D2 Q4

Q1

Q2

Q3

Q5 Q6 Q7 Q8 Q9

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OUTPUT u.s.of the diffuser

INPUT: beamline u.s.Section

Q4 Q5 Q6 Q7 Q8 Q9

Q1 Q2 Q3 Sol

Dip

ole1

Dip

ole2

alpha0

alphaa0beta b0

GA+Turtle Optimiser

N

i i

i

i

ifitnessF

1

2

0

2

01

9

TR ~ 3%

BETA=0.78 m ALPHA=0.2

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recalculated e=6mm rad, P=207

new tuning e=10 mm rad, P=207

investigate case e=3 mm rad P=207(does not converge)

PLAN: fix P=140/240 and cover the remaining empty elements

???

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- so far beamline used for initial studies & calibrations- no solenoid reduced amount of secondaries - studies to complete the (e,P) matrix (BL tuning for all possible configurations of MICE)

-waiting for DKsol(1) and check predictions vs measurements

(1) & tgt

Summary

1April, 22 2009UKNF09 - Lancaster1 MICE Beamline m. apollonio.

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