LUSI Xray Correlation Spectroscopy Instrument Advanced Procurement Review

LUSI X-ray Correlation Spectroscopy Instrument Advanced Procurement Review : Large Offset Monochromator Aymeric ROBERT – XCS Instrument Scientist Eric Bong – XCS Lead Engineer April, 2009 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Instrument Overview 600 mm 2 x 2 mm 30 mm 1400 mm ( Floor ) 2 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Transport Tunnel The LUSI monochromator is an important component of both the XCS and XPP Instruments. The design of both monochromator should be to the extent possible similar. 2. 1. The monochromator shall be operated with a fixed horizontal large offset of 600 mm as well as an independent rotation of the two parallel crystals. 2. 2. The monochromator shall provide a monochromatic beam in the range from 4 kev up to 25 ke. V. 2. 3. The overall length of the monochromator should be as small as possible 2. 4. The monochromator should accommodate Silicon and/or Diamond single crystals in (111) and (220) orientations over the full range of energy described in 2. 2. 2. 5. The possibility of having permanently 2 different crystals should be investigated FEH Hutch 4 3 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS LO-Mono Methodology Produce Physics Requirement Document Investigate previous solutions Done at ANL, ESRF, DESY P 3 SLAC plan to contract design/build Same approach as ANL for the procurement But DESY’s recent concept Write ESD & purchase docs for design/build • Multiple vendors expressed interest in mover design/build 4 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator • Safety – Preliminary concept • Set low current trip threshold of motors (software) • Training to become authorized to repair – Installation • Need to coordinate with vendor regarding the hazards associated with monochromator installation, initial turn on and rigging – Seismic • The entire system will be reviewed and approved by SLAC for seismic safety – Electrical • NRTL, SLAC Inspection and approval 5 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Transport Tunnel • Device Location : X-ray Transport Tunnel FEH Hutch 4 – LO-Mono relocated closer in March 2009 – Approx 40 meters upstream the sample. – Same concrete slab as all the optical components of the XCS instrument. – Expected Temperature stability : ± 1 F – Vibration spectrum, not known yet : the FEH hutches and utilities supplies are not built yet. Should be completed end of this year. 6 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Conceptual Design based on experience : no commercial item available Transport Tunnel Troika, ID 10 B, ESRF Currently getting build Kohzu, BL 24 XU, Spring-8 FEH Hutch 4 7 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator • • Conceptual Design Possibilities 1 st approach (ESRF/APS) – – • 2 nd approach (Kohzu) Transport Tunnel – – • First crystal is fixed Second crystal translates all the way First Crystal translates all the way Second crystal is fixed 3 rd approach (DESY) – – – First crystal is translates half the length Second crystal translates half the length X-ray beam is always going to a fixed center, which might be useful for alignment FEH Hutch 4 XCS prefers the DESY approach 8 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Translation of both crystals to cover the entire energy range Transport Tunnel FEH Hutch 4 9 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Transport Tunnel FEH Hutch 4 Monochromator Crystals • The approach is to get 2 different crystals permanently installed in the monochromator • • Full cover of the energy range Si(111) and Si(220) Moderate length of the LO-monochromator More flexibility in terms of coherent illumination conditions 10 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Transport Tunnel FEH Hutch 4 • Minimizing the length and crystals travel – The full range can be covered with the use of two different crystals. 11 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Transport Tunnel FEH Hutch 4 • 2 crystals : more adapted to coherent scattering experiments 12 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator The documentation prepared by the XCS instrument integrated team is “deeply” inspired from the documentation Produced by the APS for a large offset monochromator Transport Tunnel 1 st and 2 nd crystal motions description FEH Hutch 4 13 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator • Crystal Motion Requirements Transport Tunnel • Diagnostics for alignment FEH Hutch 4 – The design should include some diagnostics aiding the alignment of the LO-mono. – SLAC is already providing upstream and downstream diagnostics – Need for a design (based on LUSI existing diagnostics design and performances) to be located at the central point (Screen + diode) 14 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator • Additional Requirements Transport Tunnel FEH Hutch 4 15 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Engineering Specifications 16 Aymeric ROBERT aymeric@slac. stanford. edu XCS

Acquisition Strategy • The Large Offset Monochromator will be procured as a Design/build contract. • To sole or not to sole source… • Current plan is to go out for bid 17 Aymeric ROBERT aymeric@slac. stanford. edu XCS

Status of Discussions with Vendors • Cost based on ANL Offset Monochromator • Potential Vendors : • Accel – Interested in bidding on contract – Has built similar equipment • JJ X-Ray – Interested in bidding on contract • Oxford Instrument – Will send RFQ • KTC (US Vendor) – Interested in bidding on contract – Precision motion experience – No monochromator experience 18 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Procurement Specification 19 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator Schedule • Possible advanced schedule • Must re-baseline P 3 schedule to validate advanced schedule 20 Aymeric ROBERT aymeric@slac. stanford. edu XCS

XCS Large Offset Monochromator • Vendor Selection Criteria : identical to XPP procurements Criteria Max Excellent Good Fair Poor Unacceptable Compliance with technical requirements & specifications 45 40 -45 30 -39 20 -29 11 -19 0 -10 Personnel, experience, facilities 25 22 -25 16 -21 11 -15 5 -10 0 -4 Delivery and milestone schedule 10 9 -10 7 -8 4 -6 2 -3 0 -1 Quality Plan 10 9 -10 7 -8 4 -6 2 -3 0 -1 Cost 10 9 -10 7 -8 4 -6 2 -3 0 -1 Excellent - Good Fair Poor Unacceptable - Comprehensive and completer; meets or exceeds all requirements; exemplifies complete understanding of the requirements; and demonstrates in detail how to accomplish task Generally meets or exceeds requirements; omissions are of minor consequence or small; would be likely to produce an acceptable end item Omissions are of significance, but are correctable; substantiation of points is weak or lacking; probability of successful effort is marginal Gross omissions; failure to understand problem areas; failure to respond to requirements; little or no chance of success in completing the end item Does not meet the specifications 21 Aymeric ROBERT aymeric@slac. stanford. edu XCS