p.n. burrows atf2 project meeting, kek, 18/12/061 philip burrows john adams institute oxford...
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P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Philip BurrowsJohn Adams Institute
Oxford University
• LCABD 2007-10• ATF / ATF2• ESA• Miscellaneous
FONT Planning Issues
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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LC-ABD1 Structure
PPARC OSCG. Blair (Principal Investigator)P. Burrows (Project Manager)
WP2G. Blair
WP1D. Angal Kalinin
Task 1.1D. Angal Kalinin
Task 5.1 J. Clarke
Advisory Comm.
WP3A. Reichold
WP4P. Burrows
WP5M. Poole
Task 1.2J.Jones/G.White
Task 4.1 P. Burrows
Task 2.1 G. Blair
Task 2.2 G.Doucas/A.Gillespie
Task 2.3 I.Bailey
Task 4.2 S. Boogert
Task 5.2 A. Dexter
Task 5.3 N. Watson
Task 3.1A. Reichold
Task 5.4 R.Appleby, C.Densham
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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LC-ABD2 Structure
PPARC OSC
Principal Investigator: Blair Project Manager: BurrowsProject Coordinator: TBDIndustry Liaison: TBD
WP1Clarke
Tasks
Advisory Comm.
WP2Wolski
WP3Jones
WP4Angal Kalinin
WP5McIntosh
WP6Reichold
WP7Burrows
WP8Blair
WP9Boogert
WP10Densham
GDE
Tasks TasksTasksTasksTasks Tasks Tasks
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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FONT ‘new’ resources 2007-10
7. Beam FB
New Staff (inc ind. + est.) 1066
Equipment 80
Consumables 191
Travel 236
Total New 1573
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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People
Oxford + Daresbury:
Philip BurrowsGlenn ChristianHamid Dabiri Khah Tony HartinAlexander KalininJavier Resta LopezColin Perry
Graduate students:Christine Clarke (3)Christina Swinson (2)Ben Constance (1)Robert Apsimon (0)
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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WP7: Main Goals
1) Prototype ILC intra-train beam feedback system + contribute engineered design to EDR
2) Study of EM backgrounds and optimisation of IP FB system design against them
3) Design + simulation of integrated global alignment, FB + luminosity tuning strategy for EDR
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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WP7: Main Goals
1) Prototype ILC intra-train beam feedback system + contribute engineered design to EDR VERY HIGH
2) Study of EM backgrounds and optimisation of IP FB system design against them HIGH/MODERATE
3) Design + simulation of integrated global alignment, FB + luminosity tuning strategy for EDR
MODERATE – ‘ESSENTIAL’
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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RDR completedNext phase – EDR – being planned by GDE now
- Likely to be a BDS ‘work package’ dominated by SLAC + UK
Aim for EDR completion in 2010 + hope for green light from (US) Govt. so project can start
Details will be announced at LCWS Hamburg June 07The GDE R&D board was asked by PPARC to comment on
LCABD proposal – GDE aims to exert tighter control on national R&D spending
We will not be allowed to work on things that are not directly ILC relevant, and agreed by GDE!
ILC status
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Until mid 2008 (?): ATF continues as now
Late 2008? Reconfigure ATF and connect to ATF2
Early 2009?: ATF2 commissioning
ATF2 goals:1) Achieve 35nm spot at ATF2 FF (2009??)2) Stabilise spot to nm level (2010??)
Comments: This schedule already slipped by 1 year; Yen tight in JapanTook FFTB several years to achieve 70nm spots …
ATF/ATF2 schedule + goals
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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2 or 3 bunches with 300 or 150ns spacing until late 2008
Fast kicker development work will proceed in parallel with ATF/ATF2 – completely uncorrelated with ATF2 goals
- IMHO the fast extraction kicker could take longer to develop
By 2009?? or 2010?? might get 20-60 bunches w. 300ns spacing
ATF/ATF2 bunch structure
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Goal 1: Micron-level beam stability needed at ATF2 FF entrance
Goal 2: Sub-micron stability needed
-> won’t get either w/o (intra-train) beam FB + FF(depends on bunch-bunch jitter: this is unlikely to be better
with the fast kicker extraction from DR!)
Also for goal 2: they imagine IP FB using Honda IPBPM w. nm resolution
(nice, but not directly relevant for ILC FB!)
FONT at ATF/ATF2
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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2007/8: get FONT4 working properly (gain, delay-loop …)
- operational improvements
design upstream FONT system for ATF2:
what resolution to aim for?
1 micron – striplines vs. sub-micron cavities?
beamline layout
angle also? x also?
feed-forward?
2009: Commission ATF2 FONT system for goal 1/2
2010: 20-60 bunches at 300ns? IP FB w nm BPM?
add ‘luminosity’ signal input for fast scanning?
Default ATF/ATF2 plan
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Schematic ATF2 feedback layout: 1
KickerBPM
e-
BPM BPM BPM Kicker Kicker Kicker
x’ y’ x y
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Schematic ATF2 feedback layout: 2combined x-y kickers
KickerBPM
e-
BPM BPM BPM Kicker
x’ y’ x y
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Schematic ATF2 feedforward layout: 1
KickerBPM
e-
BPM BPM BPM Kicker Kicker Kicker
DampingRing
x’ y’ x y
yxy’x’
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Schematic ATF2 feedforward layout: 2 combined x-y kickers
KickerBPM
e-
BPM BPM BPM Kicker
x’ y’ x y
DampingRing
yxy’x’
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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FONT bench test system
Manufacture synchronised ILC bunch-train, clocks, and trigger
Develop algorithms and program FPGA
Close loop
(Include amplifier and dummy kicker also!)
Trigger
Bunch
2.16 MHz Diagnostic
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Only guaranteed next run is July 2007
Fighting for runs in 2008 – uphill battle- probably get some beamtime
- long-term ESA looks dodgy
Longer term: default to use SABER and/or LCLS beam -> ESA
Need to decide:
what to do in July 2007 run?
any further requirements for beam for EM studies?
End Station A
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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Apart from Tony’s EM simulations these have been on the back-burner since Glen left
Need to get plugged in to ILC LET studies for EDR
- continue/improve intra-train FB simulations
- integrate intra-train and 5Hz feedbacks
- integrate BDS feedbacks
- understand relationship with upstream FBs and FFs
- global FB, tuning strategy, alignment …
Beam simulations
P.N. Burrows ATF2 Project Meeting, KEK, 18/12/06
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FONT www site!
needs updating generally
meetings pages/archive
repository for PAC/EPAC papers
Journal publications!
Miscellaneous