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The Instrument Readiness Review Process

The Instrument Readiness Review (IRR) process is crucial for the safe, reliable, and efficient operation of the Linac Coherent Light Source (LCLS) at SLAC. It involves identifying and mitigating Unreviewed Safety Issues (USIs) associated with new instruments before commissioning. The process includes documentation review, physical inspections, and assessments of staff qualifications. Coordinated by the Instrument Scientist, IRRs ensure that all pre-start and post-start issues are addressed effectively and provide a structured approach to incorporating major instrument changes in compliance with SLAC and DOE guidelines.

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The Instrument Readiness Review Process

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  1. John Arthur LCLS Experimental Facilities DivisionJune 30, 2009 The Instrument Readiness Review Process

  2. An IRR is… • Part of a layered approach for assuring safe, reliable, and efficient operation of LCLS • Consistent with SLAC Guidelines for Operations • Chap. 23, Accelerator Safety Reviews and Unreviewed Safety Issues • Described in XFD document 030-00200-000 • Motivated by plans to add 6 major instruments for x-ray experiments at LCLS over 3-year period • A way to assure that all USI associated with new LCLS instruments have been identified and mitigated before starting commissioning of the instrument • A tool that will also be used for reviewing major changes to instruments after they are operational

  3. An IRR is not… • A replacement for normal SLAC WPC • A replacement for the SLAC USI process • Appropriate for minor repairs or changes to LCLS instruments • Appropriate for review of each LCLS experiment

  4. IRR Process • What is reviewed • Documentation • Physical inspection of instrument • Qualifications of staff • Product of review • List of documents reviewed • Record of presentations, interviews • List of review participants • Pre-start and post-start findings of review

  5. How IRR process is used • Coordinated by Instrument Scientist • Takes place when instrument is nearly complete, but allows time to address pre-start issues • May require modification of SAD and/or ASE • Modified SAD must be approved by SLAC Director • Modified ASE must be approved by DOE SSO • After all IRR pre-start issues are closed, LCLS Director authorizes start of commissioning

  6. Who is involved in IRR • Instrument Scientist coordinates • Radiation Physics group reviews shielding, beam containment issues • SLAC safety committees review issues in their areas • IRR committee has formal meeting to assess status of reviews, identify pre-start and post-start issues • Committee composed of experts from SLAC and other DOE labs • Invited by LCLS Director

  7. Tentative schedule for LCLS IRR’s • AMO instrument mid-July, 2009 • SXR instrument March, 2010 • XPP instrument July 2010 • CXI instrument January 2011 • XCS instrument May 2011 • MEC instrument 2012 IRR for early test phase of instrument may occur earlier

  8. IRR for the AMO instrument NEH lower level X-ray hutches and control rooms AMO instrument Hutch 1 Hutch 2 Hutch 3 10m soft x-ray lines hard x-ray line

  9. AMO instrument Designed to focus LCLS x-ray beam, and study interactions between intense x-ray pulses and atoms or small clusters

  10. AMO IRR status • Installation nearly finished • Working with safety committees • Collecting memos from committee chairs • Tentative date for IRR: July 15 • Choosing committee, organizing review

  11. End of Presentation

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