Download - FAC, 10/12/06 D. Schultz 1 e-Beams Systems Update Linac Injector Undulator Production MMF commissioning ARR David Schultz.

1FAC, 10/12/06D. Schultz

e-Beams Systems Update

Linac Injector Undulator Production MMF commissioning ARR

David Schultz


LCLS Diagnostics and Controls Physicist

Joe Frisch Joining Paul Emma on the LCLS Physics and Commissioning Team Brings extensive experience with diagnostics, RFBPMs, bunch length monitors, timing systems, laser systems, …


2006 Installation

BC1

BLM

LXL1

Ins/SAB

Wall

Laser

stopper

Sector 20

Sector 21


Linac Status

Downtime installation work is underwayRemoval of accelerator structures is done.Next few weeks - installing

Wall region components (this week)L1 and LX accelerator regions (this week)BC1 supports (next week)

Insertion region installation 11/6 (week 12)Table due 10/16

BLM region installation 11/6 (week 12)


Linac Accelerator Section Removal

Before

After

Making room for the Insertion, L-1 and L-X regions


The X-band accelerator section

Klystron, modulator being power tested prior to installation.


Inj/Linac quad magnets ready for installation


Diagnostic devices ready to install.

Wire scanners and profile monitors


Linac Downtime IssuesBPM feed-through welding, many leak.

Leak at ceramic, need UHV QC before weldingLate components:

BC1 Instrument packageBLM 11 (BLM 12 will be in)Toroids (in several locations)Vacuum chambers in insertion region.

Spool pieces are being fabricated to be installed temporarily.

Time will be needed to install these components as they become available.


LCLS Insertion region

Critical vacuum chambers which may be late.

Linac integrity needed for ESA program in Jan.

Linac beam

LCLS Injection


Injector Installation Status

Injector installation has taken second priority to Linac installation.

Injector vault:Floor and cable plant installed

Injector beamline:Accelerator structures, L0a ready, L0b to final bakeRF waveguide needs to go through bakeGun is in hot test, RF on 10/5

2nd gun is in brazingthen final cold-test, final braze.

Support stands are in the vault ready except for the GTL table


The LCLS Drive Laser

Drive Laser installed, operatingLSS installed in laser roomNow working on temporal shaping,

Streak cameraCross correlator


The Injector Vault

Cable plant, vault ready for beamline components.


L0A on the MMF CMM


The LCLS photocathode electron gun


Injector Installation Issues

Water system needs to be installed, installation reqs. out,

BPM feed-through welding, toroids

Late: The GTL stand released to purchasing. Estimate it will be here 11/16 for installation 11/20. Laser table installation begins 11/27 The Gun will be ready by then, needed later. GTL is late, now moving to machining. (next slide)

Working to advance the schedule. What is competing? What can be sent out? Critical path.


Gun-to-Linac area

Gun

Laser table

Spectrometer

L0a

GTL

uv


Controls

Magnet power supplies, vacuum controls, installed in racks and tested. Racks now being installed.Ethernet backbone to the Computer Center installed and connected. Wire scanners controls tested.Linac cable plant phase 2 installation is underway.Coordinating hardware installation schedule now with Controls checkout.


Magnets power racks assembled, tested,prior to installation


Vacuum system racks assembled, tested, prior to installation


Controls - PPS

Personnel Protection System is in the review process with the SLAC RSC.

PLC design conditionally approved! The Committee wants to see the certification procedure.

Beam loss and shielding design approved. Beam Containment System, LCLS FDR 10/6,

RSC review 10/12.


Undulator Systems Design

Quadrupole Order placed, vendor designs, 1st article 2/07Fixed Support/Mover Final Design Review - September 13/14

Go ahead given for production.Beam Finder Wire Final Design Review - September 20, 2006

Go ahead given for production of BFW, except wire card.RF Beam Position Monitor Final Design Review - October 4

Testing program has been interrupted by RF gun failure.Vacuum Chamber Final Design Review - September 27/28

42" chamber welded, machined, to be coated.2 other prototypes in hand for QC, permeability measurements.Plan D design effort initiated at SLAC.


Undulator vacuum chamber 4-Weld Prototype

Issues: flatness, permeability, vacuum, Al coating, surface finish

Vacuum Chamber Design Review - September 27/28


MMF Status

Measurement benches installed and commissioned.CMM installed and in use.Quad measurement station operational.Eight finished undulators are here at SLAC.Six to eight more to be shipped to SLAC by October 20th

Issues:Air cond. mixing valve (new) failed. Now repaired.New breaker panel wiring needed to be worked on.Compressed air system does not meet spec.

Looking for a work-around.Need to move to production fine-tuning.


Six undulator magnets in crates awaiting tuning at the MMF. Six to eight more to arrive at SLAC by October 20th.

Undulator magnets at the MMF


Injector Accelerator Readiness Review

Safety Assessment DocumentDraft LCLS SAD for Injector Commissioning under internal review.

Operating procedures are being written with AD Ops.Commissioning

LCLS Commissioning Workshop October 9-11 Includes a Commissioning Readiness Review.

Accelerator Readiness Review (ARR)LCLS ARR for Injector Commissioning scheduled for October 31st.Committee members, speakers on board.


The downtime schedule is very tight. We got off to a good start. Not all parts are in hand. Injector installation will delay commissioning. Controls checkout (last) is at risk.

The Undulator vacuum chamber is still in the design/prototype stage.

On the critical path. Adding engineering resources from SLAC.

The MMF is late and needs attention.

Issues