LCLS Personnel Protection System

1. LCLS Personnel Protection System Patrick Bong Controls Department PPS

2. LCLS Injector PPS • Personnel Protection System Complete • Some minor wiring errors were discovered during the engineering checkout • No programming errors have been discovered • First PLC instrumented PPS at SLAC • First SIL-3/CAT4 safety rated PLC to go on-line as a PPS controller at a DOE lab • Certified March 8, 2007 • The system is a huge success

3. Progress • We have developed a detailed specification for the undulator PPS • Engineering is progressing in order to bid the installation of long haul cables • A conceptual design is in place for X-ray End Station PPS • The conceptual design was favorably reviewed • A detailed specification is almost complete

4. PPS Architecture • PPS to utilize RSC-approved PLC system architecture used in LCLS Injector • RSC may wish to re-examine this architecture…no troubles are expected

5. LCLS PPS System View

6. Undulator System PPS Logic Package • Logic will reside in RSC-approved redundant PLC system architecture • There will be one logic package • PPS: Serves LTU, Undulator Hall and Dump • Remotely controlled by OPS in MCC

7. X-Ray Systems PPS Logic Packages • Logic will reside in RSC-approved redundant PLC system architecture • There will be two logic packages • NEH: Serves FEE and NEH Hutches • FEH: Serves XRT and FEH Hutches • There will be two types of interlocked enclosures • PPS: FEE and XRT – Controlled Access entry, remotely controlled by OPS • HPS: NEH and FEH Hutches – controlled locally by trained experimenters

8. Schematic Layout of X-Ray Beamlines, Experiments, and PPS Zones

9. PPS Enclosures • FEE, XRT: • Significantly larger and more complex than typical Hutch enclosures • FEE – potential beam hazard is commensurate with electron beam enclosures • Access would affect more than one program • Three access states: Permitted, Controlled, and No Access

10. Hutch Protection Systems (HPS) • Six Hutches, three in NEH, three in FEH • Follow SSRL user-interface model • Two Access States: ‘Permitted’ and ‘No Access’ • Experimenters can set access at will • Stoppers controlled from PPS interface panel situated in each Hutch’s “control room” • PPS interface panel has one door-release key which may be removed from the panel when stoppers are confirmed ‘in’ • SSRL Hutch door design will be utilized • There is one ‘search key’ per hutch, given only to personnel with adequate training

11. Reviews • Injector • Complete • BTH • SCR – March 2006* • PDR – July 2007 • RSC – September 2007 • FDR – February 2008 • Halls • SCR – June 2007* • PDR – October 2007 • RSC – December 2007 • FDR –April 2008

12. PPS Staff • Challenges • Two engineers have been hired to complete the LCLS PPS • The engineers are new to the field of PPS • Four members of the PPS group recently attended the USPAS Accelerator Safety Systems course taught by Kelly Mahoney • The major risk is schedule rather than technical complexity • External Aid • Kelly Mahoney (TJNAF), Henry Robertson (TJNAF) and John Forrestal (APS)

13. PPS Budget • Injector • Completed the project within budget • BTH/Undulator/Dump • ED&I – under spent • The assigned engineer was not charging to the proper account • B&H – under spent • Behind schedule with procurement of PLC hardware • Hardware will be ordered by end of July 2007 • X-Ray Systems • ED&I – under spent • The new engineer is behind schedule • I expect the project to advance quickly over the next two months • B&H – on target • On schedule with procurement of hardware • PLC hardware will be ordered when the Undulator system is ordered