MICE-UK, May 2005, pd 1

MICE Muon Beam

• Optics Design Work– Pion-Muon-Matching

• Engineering– Target– Conventional Magnets– Muon Solenoid

• MoU Signed• Delivery mid summer

– Diffuser– Hall (shielding)

MICE-UK, May 2005, pd 2

MICE-UK, May 2005, pd 3

Optics Design Work (KT)

• Since RAL collaboration meeting– Aimed to include material effects

• Scattering • Energy loss E)

– Calculations with G4Beamline (KW)– Fudge in Transport/Turtle

Match to E

~30%

MICE-UK, May 2005, pd 4

Q4

Q5

Q6

Q7

Q8

Q9

AI30

AI21

AI22

AI23

AI10

TOF0

ATC1

CKV1

AC20

D1

AC31

AC32

AC33

AC40

TOF1

AT1D

ε_source

Air filled

Muonsfrom decaysolenoid

H

V

TOF0 CHKV TOF1

Dipole

MICE-UK, May 2005, pd 5

Q4

Q5

Q6

Q7

Q8

Q9

AI30

AI21

AI22

AI23

AI10

TOF0

ATC1

CKV1

AC20

D1

AC31

AC32

AC33

AC40

TOF1

AT1D

ε_source / 10,000

Air filled

Muonsfrom decaysolenoid

H

V

TOF0 CHKV TOF1

Dipole

MICE-UK, May 2005, pd 6

Ways forward

• These effects have been included in the rate calculations– Materials, apertures

• The issue is to improve the design of the beam line to give a better through-put…

• Positions of TOF…• Positions of Qts and drift spaces• Blind optimisation of parameters (TR)

MICE-UK, May 2005, pd 7

Beam Line Engineering 1• Synchrotron

– Redesign of S7 (parts already manufactured)– Install in August– Trial build, clean and vac test

• Target & Benchmark– Opportunity to test a target in December

shutdown benchmark– Few pulse at start up – dispose of target!

MICE-UK, May 2005, pd 8

Beam Line Engineering 2

• Beam pipes

• Stands

• Vacuum

• Power supplies

• Controls

• Water

• Test beam elements (HV, Water)

MICE-UK, May 2005, pd 9

Diffuser• Issues:

– Engineering solution– Integration around front of tracker

• Tracker access for installation• Diffuser installation• Access to ToF, Cherenkov• Large shield plate

MICE-UK, May 2005, pd 10

250mm

980 mm

“wrong end” for diffuser- space is the same

MICE-UK, May 2005, pd 11

Stephanie Yang/Wing Lau Ring fixed to tracker

diffuser

Rings pushed togetherTo open levers… and install diffuser atcorrect place

http://www.isis.rl.ac.uk/accelerator/mice/beamline/diffuserassmby2.avi

MICE-UK, May 2005, pd 12

Progress & Risks• Progress against plan:

– About 6 months slack in programme– S7 – completed procurement– Vacuum & Beam pipes

• design in progress

– Need to move on • Controls• Cooling/Infrastructure (hope to reuse)• Power supplies

• Risks:– Shielding (cost)– Issue with quadrupoles (Q35s) (cost)