+ - concluding remarks on the r&d for a magic proton ring for 10 -29 e cm. yannis k....
TRANSCRIPT
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Concluding remarks on the R&Dfor a Magic Proton Ring for 10-29ecm.
Yannis K. Semertzidis, BNL
•The bottom line
•Funding request
•Possible action
EDM-review meetingBNL, 7 & 8 December 2009
Need support to develop (fully loaded costs) Total: ~$4M
• SCT COSY-INF.:$1M, UAL+SPINK: $0.5M
• BPMs $0.45M + hardware: ~$1M (likely)
• Polarimeter $1M
• E-field gradient: $0.6M
Possible Immediate Action Plan
• SCT COSY-INFINITY: $1M. Need a post doc and a graduate student. Collaboration with COSY/Juelich? UAL+SPINK: $0.5M C-AD based, part of RHIC spin effort?
• BPMs: $0.45M + hardware (need to establish team with experts including a team-leader)
• Polarimeter: $1M (IUCF based effort?)• E-field: $0.6M. BNL Physics dept. based effort.
• $0.5M for would be needed to keep the momentum in FY10
• 26 Electrostatic separators with support systems (we need 64)
• Use testing chambers with New Plates
• High Pressure Water Rinsing
• …
Establish an agreement with FNAL: They can help with E-field & we’ll help with muon g-2
3 m
BPM Prior work (ATF of KEK/Japan)
PRST , Accel & Beams, 11,062801 (2008).Achieved res. ~8nm per ~1010 electrons/bunch
Not exactly the same application... NSLS II work (@ BNL) may be more applicable
More work preparing for DOE reviews:
• Source-beam preparation, Beamline, Injection (C-AD)• Bunch capture with RF (develop RF) (C-AD)• Vertical to horizontal spin precession (RF-solenoid)
(COSY)• Detailed studies of IBS, beam-beam interactions,
optimize phase space (C-AD)• Slow extraction onto an internal target for polarization
monitoring (stripline kickers) (COSY)• Use feedback to RF from polarimeter to keep spin
longitudinal (IUCF/C-AD)• Costing of experiment (plus building) (C-AD)
Technically driven Milestones
0807 09 10 11 12 13 14 15 16 17
Spring 2008, Proposal to the BNL PAC• 2010-2013 R&D phase; ring design
• Fall 2010: E vs. gap studies; simulation and design of Fall 2010: E vs. gap studies; simulation and design of polarimeter; 1polarimeter; 1stst phase of SCT studies; design of BPM cavity phase of SCT studies; design of BPM cavity
• Fall 2011: Polarimeter construction; SCT including placement Fall 2011: Polarimeter construction; SCT including placement errors & fringe fields; BPM cavity construction and electronics errors & fringe fields; BPM cavity construction and electronics development, test in lab.development, test in lab.
• Spring 2012: Finish first full scale E-field module testSpring 2012: Finish first full scale E-field module test• Fall 2012: Finish commissioning and calibration of polarimeter Fall 2012: Finish commissioning and calibration of polarimeter
detector at COSY; Full scale tracking simulation package for detector at COSY; Full scale tracking simulation package for EDM ring in place; Test cavity BPMs at a collision point using EDM ring in place; Test cavity BPMs at a collision point using stored beamsstored beams
Technically driven pEDM Timeline
0807 09 10 11 12 13 14 15 16 17 Spring 2008, Proposal to the BNL PAC• 2008-2012 R&D phase; ring design• Fall 2009 Conceptual Technical Review at BNLFall 2009 Conceptual Technical Review at BNL
• Fall 2012, Finish R&D studies: a) Develop BPMs, 10 nm, 1 Hz BW resolution
b) spin/beam dynamics related systematic errors. c) Polarimeter detector development and prepare for testing
d) Finalize E-field strength to use e) Establish Spin Coherence Time, study systematic errors,
optimize lattice
• FY 2013, start ring construction• FY 2015, pEDM engineering run starts• FY 2016, pEDM physics run starts
Technically driven pEDM Timeline
0807 09 10 11 12 13 14 15 16 17
• June 2010 CD-0• June 2011 CD-1• Fall 2012 CD-2/3Fall 2012 CD-2/3• Fall 2015 CD-4
• Start of 2012, finish pEDM detailed ring design
• FY 2013, start ring construction• FY 2015, pEDM engineering run starts• FY 2016, pEDM physics run starts
Summary: Total R&D $4M, 3 years • We need a very strong endorsement to move forward.• $0.5M/FY10 not to lose a year• Need to establish a Beam Position Monitoring team
and to support the Spin & Beam Dynamics team. Sufficiently support the E-field and Polarimeter teams.
• Facilitate collaboration with experts around the world (NSLS II, ILC-based BPM work like ATF-KEK, etc.).
• Help with travel expenses until funding materializes to collaborating institutions
• Collaborating with COSY/Juelich and FNAL would be mutually beneficial.
12
AGS Complex
Booster
AGS
g-2 experiment
Linac
TTBC-AD Admin
NSRL
pEDM @ 17 MV/m
100 m
pEDM
Rin
g30
.8m
B1W 640 - 3mm - AIR
BI 509 - P
BW 387 - 2mm - PBI 387 - P
AW 290 - 3mm - PAI 290 - P
A3I 482
A1I 410 - P
ENG. APP.
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OUTSTANDINGECN MATERIAL:
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UPTON, N.Y. 11973ASSOCIATED UNIVERS ITIES , INC. A
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DRAWING NUMBE R
SCALE:
REV.
DATE
DRAWN
BY
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BREAK SHARP EDGES
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UNLESS OTHERWISE SPECIFIEDDIMENSIONS ARE IN INCHES
INTERPRET DRAWING
DECIMAL TOLERANCES.X ±
.XX ±.XXX ±
ANGULAR TOLERANCE
±
FINISH MAX. MIN.SUP V. APP.
B1W 576 - 2mm - P
BW 509 - 2mm - P
CF157
DB2
BB3
AF124
CF255
CP2
AF171
DF146
DF215
CP1
CF100
CST036
A3W 482 - 2mm
AP1
CF11AB1
C5D7
C5D10
C5Q9
REQUEST NEW INSTRUMENTS BY CONTACTING LIASON ENGINEER OR PHYSICIST.
EXPERIMENTERS:
EXP 864 HOUSE
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= COLLIMATORS
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B INSTRUMENTATIONRACKS
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A-D INSTRUMENTATIONRACKS
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(SERVO ON W482)
A1W410PA1I410P
A3D149
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CI474CW474P
A1C1
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BF329
DF332
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C5W700P
C1I595P
C1W555P
C1C1
C1C2
BF387
BI387P
CF440
CW370
BW387P
CI370P
B1C1
C5W750P
B2C1
B2C2
BEAM PLUG
PI
C1I 555 - PC1W 555 - 2mm - P
B5I601
P3P4
B1C2
CP3
A1W 347 - 3mm - P
C1W 595 - 2mm - P
A1W 410 - 2mm - PA1I 347 - P
B5W601
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B1W760
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B1I780B1I760 B1W780
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CHAMBER
C5WI360
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B1I 720B1W 760 - 1mm
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B1W 720 - 2mm
B1I 780
- #1462C
B1I 760B1W 780 - 3mm C5 FLAG
C1W530
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CI 370 - PCW 474 - 2mm - P
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A1I347A1W347P
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C5W 750 - 2mm - P
CW 370 - 2mm - P
C5W 700 - 2mm - PC1W 655 - 3mm - P
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"D6" BEAMLINE
M.E. BUILDING
EXP 906 HOUSE
EXP 865 HOUSE
"D2" BEAMLINE
"A2" BEAMLINE
100 m
pEDM @ 17 MV/m
pED
M R
ing
30.8m
A possible solution for simultaneous CW and CCW beams (Yuri Orlov)
Beta-Max Beta-MaxBeta-Min Beta-Min
Vector asymmetry
V+
V−
T+
T−
Unp
Resonance crossing using RF-solenoid (full spin flip)
Slowly extracting the beam while monitoring its polarization as a function of time
From the September 2008 run at COSYPolarimeter team
Searching for optimum sextupoles (Preliminary res.)
Two sets of sextupoles are next to focusing and defocusing quads. Both horizontal and vertical motions are included.
SCT team, F. Lin et al.
SCTS
Proton Statistical Error (230MeV):
3pd
R c Tot pE AP N fT
p : 103s Polarization Lifetime (Spin Coherence Time)A : 0.6 Left/right asymmetry observed by the polarimeterP : 0.8 Beam polarizationNc : 21010p/cycle Total number of stored particles per cycleTTot: 107s Total running time per yearf : 0.5% Useful event rate fraction (efficiency for EDM)ER : 17 MV/m Radial electric field strength (65% azim. cov.)
292.5 10 e cm/yearpd