January 22-24, 20081

LCLS Week 2The Extruded Aluminum vacuum chamber…

January 22-24, 20082

Progress to Date…

Polishing continues…Twenty-five pieces already delivered to Hi-Tech for Machining

We continued to adjust the recipe for polishing as we went along up to this point—we now feel we can polish more consistently within a more satisfying range.

Ten more pieces scheduled for delivery to Hi-Tech on 1/30

The remaining ten pieces to be delivered to Hi-Tech in early February

January 22-24, 20083

Polishing Results So Far…

January 22-24, 20084

Progress continued…

Machining continues…Six production chambers delivered to ANL

Chamber machining was temporarily on hold for machining of chamber alignment plates

This “hold” period allowed us to learn a little more about the alignment and machining of the production chambers

All 120 plates now fully machined.

The next batch of production chambers now being machined—delivery anticipated 2/3.

January 22-24, 20085

Vacuum Chamber SpecificationsA draft Engineering Specification Document (ESD) is written. Requirements are below.

Parameter Value Achieved

Thickness of chamber at aperture 6.00 +.15/-.05 mm 5.995 – 6.122 mm

Aperture height 5.00 ± .08 mm 4.990 – 5.118 mm

Overall flange to flange length 3464.44 +0.2/-0.8 mm

3463.90 min

3464.64 max

Vertical straightness of the mounted chamber after alignment ≤ 0.050 mm 0.059 mm worst case

Beam stay-clear radius around the chamber aperture axis ≥ 2.3 mm 2.47 mm worst case

Average rms slope error goal of aperture in both longitudinal and transverse directions – best effort See table -

Average vacuum pressure < 10-6 Torr <5 x 10-7

RGA mass scan All peaks ≤ 44 AMU All peaks ≤ 44 AMU

Vacuum chamber material 6063 aluminum 6063 aluminum

January 22-24, 20086

LCLS VC thickness inspection

January 22-24, 20087

LCLS VC dimensional inspection and installation test

LCLS VC on the alignment stand

LCLS VC on the granite table for the length inspection

January 22-24, 20088

Inspection and correction of the LCLS VC end flange perpendicularity (.003 - .004 precision)

January 22-24, 20089

Inspection of the end length of the LCLS VC(.001” precision)

January 22-24, 200810

Two LCLS VC on the baking stands

January 22-24, 200811

Progress continued…

First Delivery to LCLS Soon…

On 1/28, the first five chambers will depart ANL

January 22-24, 200812

First production LCLS VC in the shipping crate

January 22-24, 200813

The Schedule…Event Original Completion

DateUpdated Completion Date

Polishing of extrusions 12/07/07

Straightening of extrusion

Machining of extrusions 4/21/08

Chamber Processing at ANL 4/23/08

Ship Chambers 1-5 to SLAC 1/23/08 2/1/08

Ship Chambers 6-10 to SLAC 1/28/08 2/22/08

Ship Chambers 11-20 to SLAC 3/10/08 3/14/08

Ship Chambers 21-30 to SLAC 3/26/08 4/4/08

Ship Chambers 31-40 to SLAC 4/25/08 4/29/08

January 22-24, 200814

What we learned along the way…

The overall length is difficult to predict precisely due to shrinkage during the welding of the ends.

The Dycor RGA heads short out easily.Two shorts in five chambers???

The alignment system …We are evaluating other options that we hope may be easier to use.

Eliminate the compound screw that limits roll adjustment???

January 22-24, 200815

Minor changes in LCLS VC design to simplify its alignment

First six chambers

All other chambers

January 22-24, 200816

CONCLUSION

Manufacturing and certification of the LCLS vacuum chambers is proceeding according

to our schedule and within the allocated budget

January 22-24, 200817

ACKNOWLEDGMENTS

A special “thank you” to: Mark Erdmann, Joe Gagliano, George Goeppner, Dana Capatina, Scott Doran, Esiquio Salazar, Kevin Knoerzer,

Russel Otto, Dan Nocher, Mike Bosek, Dan VanLannan, Wayne Michalek, Mark Martens, Paul Aguirre, Aaron Lopez, Lahsen Assoufid, Jun Qian, Albert Macrander;

Frank Bock (“Cardinal aluminum Co.”), Don Fulcher, Tom Inwood (“Engineered Finishing Co.”), Simon Sorsher (“Hi-Tech Mfg.”).