Fee fel commissioning overview
This presentation is the property of its rightful owner.
Sponsored Links
1 / 17

FEE/FEL Commissioning Overview PowerPoint PPT Presentation


  • 104 Views
  • Uploaded on
  • Presentation posted in: General

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.

Download Presentation

FEE/FEL Commissioning Overview

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Fee fel commissioning overview

FEE/FEL Commissioning Overview

By Hal Tompkins

Photon Beam Systems Deputy

Presentation to the Facility Advisory Committee

June 16, 2008


Outline

Outline

  • Commission FEE Instruments

  • Offset mirror commissioning

  • SASE optimization

  • AMO experiment alignment

  • User Operations at ~4 GeV


Related presentations

Related Presentations

  • Paul Emma, Commissioning Results and Plans

  • H.D. Nuhn, LTU and Undulator Commissioning Plans

  • Richard Bionta, FEE Diagnostics and Commissioning

  • John Bozek, AMO Instrument


Fee fel commissioning overview

LCLS Installation and Commissioning Time-Line

First Light

in FEE

First Light

in FEH

PPS Cert. LTU/Dump

LTU/Und/Dump Install

CD-4 (7/31/2010)

X-Rays in NEH

FEE/NEH Install

FEH Hutch BO

FEH Install

PEP-II run ends

Und. Seg. Install

now

J

F

M

A

M

J

J

A

S

O

N

D

J

F

M

A

M

J

J

A

S

O

N

D

J

F

M

A

M

J

J

A

A

M

2008 2009 2010

Down

PPS

LTU/Und

Comm.

Linac/BC2 Commissioning

Re-commission Inj/BC2 to SL2

NEH Operations/ Commissioning

FEE

Comm.

June 16, 2008


Readiness reviews

Readiness Reviews

  • FEE/NEH Beam Readiness Reviews to be held in March-April 2009 time frame

  • AMO Experiment Readiness Review in June-July 2009

  • X-Ray Tunnel/FEH Beam Readiness Reviews to be held in November-December 2009 time frame


Fee commissioning initial conditions

FEE Commissioning - Initial Conditions

  • Start with single undulator

  • 13.6 GeV electrons

  • 0.2 nanocoulombs

  • 10 Hz


Fee instrument commissioning 5 15 to 6 25

FEE Instrument Commissioning5/15 to 6/25

  • Conduct FEE Beam readiness review in Mar.-Apr., 2009

  • Open 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)


Fee instrument commissioning cont

FEE Instrument Commissioning (cont.)

  • Commission gas detectors (2-4 d)

    • apertures inserted

    • add gas

    • power magnet

    • compare 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)


Offset mirrors 6 26 to 7 16

Offset Mirrors6/26 to 7/16

  • Tune linac for appropriate energy

  • Begin 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


Offset mirrors cont

Offset Mirrors (cont.)

  • Open hutch stoppers to AMO experiment

  • RP surveys - insure full intensity through C4S2

  • Begin AMO experiment alignment


Sase optimization 7 17 to 8 13

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 Hz

    • Use 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


Sase optimization cont

SASE Optimization (cont.)

  • If FEL reaches ~0.1-1.0 mJ, commission calorimeter (3-5 d)

  • Need to limit linac to 10 Hz

  • Once calorimeter is commissioned, cross-calibrate the gas detectors and the direct imager (2-3 d)

  • Measure position stability

  • Electron energy stability already < 0.1% (at end of linac)

  • During off-hours, deliver beam to AMO experiment


Amo experiment

AMO Experiment

  • HF Physics chamber will be in place by May 1, 2009

  • Laser will be ready at the same time

  • Commissioning of laser transport to AMO exp. begins

  • Diagnostics chamber to be in place June, 2009

  • KB optics delivered in May or June, 2009

  • Begin aligning KB optics, HF physics chamber, and diagnostics chamber in mid-July


Summary

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 reasonable

  • Experiments in Fall, 2009 are not part of CD 4 goals


  • Login