beam commissioning schedule and staff p. emma accelerator readiness review dec. 4, 2008

Paul EmmaPaul Emma

Beam Commissioning Schedule and StaffBeam Commissioning Schedule and Staff [email protected]@SLAC.Stanford.edu

Dec. 4, 2008Dec. 4, 20081

SLAC National Accelerator Laboratory

Beam Commissioning Schedule and StaffBeam Commissioning Schedule and Staff P. EmmaP. Emma

Accelerator Readiness ReviewAccelerator Readiness Review

Dec. 4, 2008Dec. 4, 2008

LCLSLCLS

GoalsGoals

Radiation SurveysRadiation Surveys

ManpowerManpower

OrganizationOrganization

http://www-ssrl.slac.stanford.edu/lcls/commissioning/http://www-ssrl.slac.stanford.edu/lcls/commissioning/

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20082


LCLSLCLS Accelerator Layout Accelerator Layout

SLAC linac tunnelSLAC linac tunnel research yardresearch yard

Linac-0Linac-0L L =6 m=6 m

Linac-1Linac-1L L 9 m9 m

rf rf 25°25°

Linac-2Linac-2L L 330 m330 mrf rf 41°41°

Linac-3Linac-3L L 550 m550 mrf rf 0° 0°

BC1BC1L L 6 m6 m

RR5656 39 mm39 mm

BC2BC2L L 22 m22 m

RR5656 25 mm25 mm DL2 DL2 L L =275 m=275 mRR56 56 0 0

DL1DL1L L 12 m12 mRR56 56 0 0

undulatorundulatorL L =130 m=130 m

6 MeV6 MeVz z 0.83 mm 0.83 mm 0.05 %0.05 %

135 MeV135 MeVz z 0.83 mm 0.83 mm 0.10 %0.10 %

250 MeV250 MeVz z 0.19 mm 0.19 mm 1.6 %1.6 %

4.30 GeV4.30 GeVz z 0.022 mm 0.022 mm 0.71 %0.71 %

13.6 GeV13.6 GeVz z 0.022 mm 0.022 mm 0.01 %0.01 %

Linac-Linac-XXL L =0.6 m=0.6 mrfrf= =

21-1b,c,d

...existinglinac

L0-a,b

rfrfgungun

21-3b24-6dX

25-1a30-8c

undulatorundulator

Commission Mar-Aug 2007Commission Mar-Aug 2007 Commission Jan-Aug 2008Commission Jan-Aug 2008 Nov 2008…Nov 2008…

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20083


LCLS Commissioning Web-PageLCLS Commissioning Web-Pageh

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Phase-IIPhase-IIPhase-IPhase-I Phase-IIIPhase-III

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20084


Design and Typical Measured Parameters Design and Typical Measured Parameters (Aug. 2008)(Aug. 2008)

ParameterParameter symbolsymbol designdesign measuredmeasured unitunit

Final linac Final linac ee energy energy mcmc22 13.613.6 13.613.6 MeVMeV

Bunch chargeBunch charge QQ 11 0.250.25 nCnC

Initial bunch length (rms)Initial bunch length (rms) z0z0 0.90.9 0.750.75 mmmm

Final bunch length (rms)Final bunch length (rms) zfzf 2020 8-108-10 mm

ProjectedProjected emittance (injector) emittance (injector) xx,,yy 1.21.2 0.7-1.00.7-1.0 μμmm

SliceSlice emittance (injector) emittance (injector) ssxx,,yy 1.01.0 0.60.6 μμmm

ProjectedProjected emittance (linac end) emittance (linac end) LLxx,,yy 1.51.5 0.7, 1.6*0.7, 1.6* μμmm

Single bunch repetition rateSingle bunch repetition rate ff 120120 3030 HzHz

RF gun field at cathodeRF gun field at cathode EEgg 120120 115115 MV/mMV/m

Laser energy on cathodeLaser energy on cathode uull 250250 20-15020-150 μμJJ

Laser diameter on cathodeLaser diameter on cathode 22RR 1.51.5 1.21.2 mmmm

Cathode quantum efficiencyCathode quantum efficiency QEQE 66 0.7-70.7-7 101055

* horizontal slice emittance likely < 1 * horizontal slice emittance likely < 1 µµmm

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20085


GoalsGoals

1)1) Re-establish Linac OperationsRe-establish Linac Operations

2)2) Transport Transport ee to main dump (~14 GeV, to main dump (~14 GeV,

200 pC, 200 pC, 10 Hz)10 Hz)

3)3) Verify all new components (BPMs, Verify all new components (BPMs,

screens, magnets, wires, software, etc)screens, magnets, wires, software, etc)

4)4) Verify all new photon diagnostics (FEE)Verify all new photon diagnostics (FEE)

5)5) Commission MPS & BCSCommission MPS & BCS

6)6) Fully characterize electron beamFully characterize electron beam

7)7) Align undulator using beam-based methodAlign undulator using beam-based method

8)8) Characterize X-ray radiationCharacterize X-ray radiation

9)9) Establish CD-4 flux level in FEEEstablish CD-4 flux level in FEE

http://www-ssrl.slac.stanford.edu/lcls/commissioning/documents/2009_commissioning-goals.dochttp://www-ssrl.slac.stanford.edu/lcls/commissioning/documents/2009_commissioning-goals.doc

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20086


Pre-Beam CheckoutPre-Beam Checkout1)1) Check magnet polaritiesCheck magnet polarities

2)2) Check cable connectionsCheck cable connections

3)3) Check component serial numbersCheck component serial numbers

4)4) Check component installation Check component installation

orientationorientation

5)5) Check controls function (power, Check controls function (power,

motion, readback, etc)motion, readback, etc)

6)6) Check water connectionsCheck water connections

7)7) Label all components, etc…Label all components, etc…

http://www-ssrl.slac.stanford.edu/lcls/commissioning/documents/pre-beam-check-list-2009.dochttp://www-ssrl.slac.stanford.edu/lcls/commissioning/documents/pre-beam-check-list-2009.doc

51 pages, 2000 checks, 70% done51 pages, 2000 checks, 70% done

Separate list for undulator…Separate list for undulator…204 pages, 7200 checks, 10% done?204 pages, 7200 checks, 10% done?

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20087


Radiation SurveysRadiation Surveys

http://www-ssrl.slac.stanford.edu/lcls/commissioning/documents/part1_uncominitial-11-13-08.dochttp://www-ssrl.slac.stanford.edu/lcls/commissioning/documents/part1_uncominitial-11-13-08.doc

1)1) Beam to D2 in BSY (done) – Beam to D2 in BSY (done) – survey BTHW, etc.survey BTHW, etc.

2)2) Beam to und. stopper – survey Beam to und. stopper – survey BTH head house, mazes, etc.BTH head house, mazes, etc.

3)3) 14-GeV beam to main dump – 14-GeV beam to main dump – survey bldg. 921, FEE-wall, etc.survey bldg. 921, FEE-wall, etc.

4)4) 4-GeV beam to main dump - 4-GeV beam to main dump - survey bldg. 921, FEE-wall, etc.survey bldg. 921, FEE-wall, etc.

>1 week required when first beam transported into new halls (BTH, UH, Dump)

DRAFT

DRAFT

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20088


ManpowerManpowerLCLS Commissioning Phase-III: Nov. 2008 through July 2009 (36 wks)LCLS Commissioning Phase-III: Nov. 2008 through July 2009 (36 wks)

3 shifts per day (1-2 physicists 8:00-16:00 & 16:00-24:00, with 3 shifts per day (1-2 physicists 8:00-16:00 & 16:00-24:00, with operations coverage 24:00-8:00, unless more required)operations coverage 24:00-8:00, unless more required)

21 LCLS Physicists (all with LCLS experience)

Axel Brachmann (ASD)Dave Dowell (consultant - available 1 week/month)Franz-Josef Decker (ASD)Yuantao Ding (PPA)Paul EmmaJoe FrischSasha Gilevich (laser)Steve Edstrom (laser)Greg Hays (laser)Philippe Hering (laser)Zhirong Huang (PPA)Cecile Limborg (on leave until May, 2009)Henrik LoosRick IversonHeinz-Dieter NuhnDaniel Ratner (graduate student/PPA)Jim TurnerJim WelchBill White (laser)Juhao WuDao Xiang (post-doc, PPA)

…plus new help from PEP-II and beyond

Kirk BertscheSasha NovokhatskiJerry Yocky

+ LBNLSasha ZholentsBill Fawley

+ TriesteSimone Spampanati

+ DESY, PSI, …?

+ Operations, Controls, Power-conversion, RF, engineering, etc

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 20089


Physicist Commissioning Shifts SchedulePhysicist Commissioning Shifts Schedule

example

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 200810


With 36 total weeks, this distributes into the following weekly work load for each group (averaged over 36-week run).

LCLS Physicists: ~1 shift/wk (peak is higher depending on task)

Operators (3/shift): Operate accelerator and support commissioning

Chief Operator (EOIC): Leads operations crew during shift

Program Deputy: Makes daily decisions on program

Program Coordinator: (PE) Sets long-term program, shifts, access, etc.

Controls Deputy: Liaison to controls group to solve daily problems

Commiss’ng Engineer: Coordinate access/repair days and direct work

Manpower and OrganizationManpower and Organization

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 200811


Important Dates for 2008/2009 CommissioningImportant Dates for 2008/2009 Commissioning

Nov. 3, 2008:Nov. 3, 2008: Startup (establish beam to end of linac again)Startup (establish beam to end of linac again)

Dec. 10, 2008:Dec. 10, 2008: Install laser-heater undulator (1 day)Install laser-heater undulator (1 day)

Dec. 15, 2008:Dec. 15, 2008: First beam through LTU & to dump? (survey)First beam through LTU & to dump? (survey)

Dec. 19, 2008:Dec. 19, 2008: SLAC shuts down for holidaysSLAC shuts down for holidays

Jan. 5, 2009:Jan. 5, 2009: Startup again (establish beam in LTU & Startup again (establish beam in LTU &

dump)dump)

March 2, 2009:March 2, 2009: Install Install 25 undulators + PPS re-cert. (~2 wks)25 undulators + PPS re-cert. (~2 wks)

May 14, 2009:May 14, 2009: First x-ray beam in FEEFirst x-ray beam in FEE

July 2009:July 2009: Photons in NEHPhotons in NEH

August 2009:August 2009: Start AMO ExperimentStart AMO Experiment

December 2009:December 2009: Downtime for holidays + PPS re-cert. (~2 mo.)Downtime for holidays + PPS re-cert. (~2 mo.)

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 200812


Re-establishRe-establishee to SL2 to SL2

LTU/LTU/UndUnd

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NEH Ops & NEH Ops & CommissioningCommissioning

JJJJ FFFF MMMM AAAA MMMM JJJJ JJJJ AAAA SSSS DDDD JJJJ FFFF MMMM AAAA MMMM JJJJ JJJJ AAAA SSSS OOOO NNNN DDDD JJJJ FFFF MMMM AAAA MMMM JJJJ JJJJOONNAA

2008 2009 20102008 2009 2010 2008 2009 20102008 2009 2010DownDownPPS

PPS

Linac/BC2 Linac/BC2 CommissioninCommissionin

g g FEL/FEEFEL/FEECommissioniCommissioni

ng ng Nov. 3, 2008Nov. 3, 2008

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LCLSLCLS Installation and Commissioning Time-Line Installation and Commissioning Time-Line

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Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 200813


LTU/Undulator/FEE/FEL CommissioningLTU/Undulator/FEE/FEL Commissioning

H. TompkinsH. Tompkins

+ heater+ heater

Paul EmmaPaul Emma


Dec. 4, 2008Dec. 4, 200814


Beam Appears Bright Enough for FEL Saturation at 0.15 nmBeam Appears Bright Enough for FEL Saturation at 0.15 nm

Calculation based on measured end-of-linac Calculation based on measured end-of-linac projectedprojected emittance values, measured peak emittance values, measured peak current, and design undulator parameters (assuming undulator alignment and current, and design undulator parameters (assuming undulator alignment and 0.01% 0.01% rms slice energy spread – not yet measurable) rms slice energy spread – not yet measurable)

M. Xie method, with wakesM. Xie method, with wakes

FEL Power3D Gain Length

FEL Power3D Gain Length

beam commissioning schedule and staff p. emma accelerator readiness review dec. 4, 2008

Documents