p.n. burrows atf2 project meeting, kek, 18/12/061 philip burrows john adams institute oxford...

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


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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


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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


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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


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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)


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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


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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’


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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


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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


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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


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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


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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


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Schematic ATF2 feedback layout: 1

KickerBPM

e-

BPM BPM BPM Kicker Kicker Kicker

x’ y’ x y


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Schematic ATF2 feedback layout: 2combined x-y kickers

KickerBPM

e-

BPM BPM BPM Kicker

x’ y’ x y


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Schematic ATF2 feedforward layout: 1

KickerBPM

e-

BPM BPM BPM Kicker Kicker Kicker

DampingRing

x’ y’ x y

yxy’x’


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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’


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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


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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


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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


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FONT www site!

needs updating generally

meetings pages/archive

repository for PAC/EPAC papers

Journal publications!

Miscellaneous

p.n. burrows atf2 project meeting, kek, 18/12/061 philip burrows john adams institute oxford...

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