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FEE/FEL Commissioning Overview. By Hal Tompkins Photon Beam Systems Deputy Presentation to the Facility Advisory Committee June 16, 2008. Outline. Commission FEE Instruments Offset mirror commissioning SASE optimization AMO experiment alignment User Operations at ~4 GeV. - PowerPoint PPT Presentation
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Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20081
FEE/FEL Commissioning Overview
By Hal TompkinsPhoton Beam Systems Deputy
Presentation to the Facility Advisory Committee
June 16, 2008
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20082
Outline
Commission FEE InstrumentsOffset mirror commissioningSASE optimizationAMO experiment alignmentUser Operations at ~4 GeV
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20083
Related Presentations
Paul Emma, Commissioning Results and PlansH.D. Nuhn, LTU and Undulator Commissioning PlansRichard Bionta, FEE Diagnostics and CommissioningJohn Bozek, AMO Instrument
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20084
LCLSLCLS Installation and Commissioning Time-Line Installation and Commissioning Time-Line
LTU/Und/Dump
LTU/Und/Dump
Instal
l Instal
l
LTU/UndLTU/UndComm. Comm.
Re-Re-commission commission Inj/BC2 to Inj/BC2 to
SL2SL2
First LightFirst Lightin FEEin FEE
PEP-II run
PEP-II run
ends
ends
FEE/NEH
FEE/NEH
Install
Install
PPS Cert.
PPS Cert.
LTU/Dump
LTU/Dump
FEH Install
FEH Install
CD-4
CD-4
(7/31/
2010)
(7/31/
2010)
X-Rays in NEH
X-Rays in NEH
First First LightLightin FEHin FEH
NEH NEH Operations/ Operations/ CommissioningCommissioning
JJ FF MM AA MM JJ JJ AA SS DD JJ FF MM AA MM JJ JJ AA SS OONN DD JJ FF MM AA MM JJ JJOONNA 2008 2009 20102008 2009 2010DownDown
PPS
PPS
AM
now
now
Linac/BC2 Linac/BC2 CommissioninCommissionin
g g FEEFEE
Comm. Comm. June 16, 2008June 16, 2008
FEH Hutch BO
FEH Hutch BO
Und
. Seg
. Ins
tall
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20086
Readiness Reviews
FEE/NEH Beam Readiness Reviews to be held in March-April 2009 time frameAMO Experiment Readiness Review in June-July 2009X-Ray Tunnel/FEH Beam Readiness Reviews to be held in November-December 2009 time frame
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20087
FEE Commissioning - Initial Conditions
Start with single undulator13.6 GeV electrons0.2 nanocoulombs10 Hz
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20088
FEE Instrument Commissioning5/15 to 6/25
Conduct FEE Beam readiness review in Mar.-Apr., 2009Open Dump stoppers, RP initial survey (1-2 d)Insert Direct Imager, check upstream apertures (1-2 d)Commission adjustable slits (1-2 d)Insert all undulators, 13.6 GeV electrons, RP survey (2-3 d)Insert gas attenuator apertures, check alignment (1-2 d)Commission gas attenuator/solid attenuators (1-2 d)Center reticule on beam, project through C1 (1-2 d)Decide if OMS realignment is necessary (+/- 1mm range) (0-5 d)
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 20089
FEE Instrument Commissioning (cont.)
Commission gas detectors (2-4 d) apertures insertedadd gaspower magnetcompare APD & PMT response to attenuation
Commission K-monochromator (4-6 d)Transmit beam through 4 bounces (~8.172 eV)Checkout quadrant photodiode (keep intensity low)Measure x-ray energy, undulator bandwidth
Measure photon flux (part of CD4 goals) (1 d)
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 200810
Offset Mirrors6/26 to 7/16
Tune linac for appropriate energyBegin with soft x-ray offset mirror system (SOMS)Insert M1S, use P1 to set angle, translation (2-4 d)Insert M2S, use P2S to set angle, translation (1-2 d)Insert M3S2, use P3S2 to set angle, translation (1-2 d)Retract M3S2 and insert M3S1, use P3S1 to set angle, translation (1-2 d)Retract M1S and apply same procedure to HOMS (3-5 d)Priority is SOMS for hutch 2 - delivers beam to AMO experiment
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 200813
Offset Mirrors (cont.)
Open hutch stoppers to AMO experimentRP surveys - insure full intensity through C4S2Begin AMO experiment alignment
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 200814
SASE Optimization7/17 to 8/13
Change linac to 4.52 GeV (nominal 908 eV), check beam center with K-mono (keep intensity low, 1-2 d)Switch to direct imager, look for FEL (should be able to see signals ≥100 nJ)If unable to find FEL, measure undulator K values
Change linac back to 13.56 GeV, 10 HzUse K-mono to measure spectrum (3-5 d)
Optimize SASE (vary bunch compression, emittance, RF, BBA, etc.)Above 50 J, imager saturates, need gas attenuator
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 200815
SASE Optimization (cont.)
If FEL reaches ~0.1-1.0 mJ, commission calorimeter (3-5 d)Need to limit linac to 10 HzOnce calorimeter is commissioned, cross-calibrate the gas detectors and the direct imager (2-3 d)Measure position stabilityElectron energy stability already < 0.1% (at end of linac)During off-hours, deliver beam to AMO experiment
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 200816
AMO Experiment
HF Physics chamber will be in place by May 1, 2009Laser will be ready at the same timeCommissioning of laser transport to AMO exp. beginsDiagnostics chamber to be in place June, 2009KB optics delivered in May or June, 2009Begin aligning KB optics, HF physics chamber, and diagnostics chamber in mid-July
Hal Tompkins
FEE/FEL Commissioning [email protected]
June 16, 200817
Summary
Very tight schedule between first beam to FEE and User Run - driven by FY08 budget limitations.Very tight schedule between AMO experiment installation and User Run - driven by FY08 budget limitations.We think the goal of achieving lasing at 1.5 nm by Aug.-Sep., 2009 is reasonableExperiments in Fall, 2009 are not part of CD 4 goals
