Transcript Slide 1
Injector/BC1 Commissioning (Dec. 1, ’06 through Aug. 1, ‘07) P. Emma LCLS FAC Meeting Accelerator Systems Breakout April 20, 2006 LCLS April 20, 2006 Injector/BC1 Commissioning 1 Paul Emma [email protected] LCLS Accelerator Schematic and Time Frames 6 MeV z 0.83 mm 0.05 % 4.30 GeV z 0.022 mm 0.71 % 13.6 GeV z 0.022 mm 0.01 % Linac-X L =0.6 m rf= -160 Linac-0 L =6 m rf gun 250 MeV z 0.19 mm 1.6 % 135 MeV z 0.83 mm 0.10 % Linac-1 L 9 m rf -25° ...existing linac 21-1 b,c,d DL1 L 12 m R56 0 Linac-2 L 330 m rf -41° Linac-3 L 550 m rf 0° 21-3b 24-6d 25-1a 30-8c X BC1 L 6 m R56 -39 mm Commission in Jan. 2007 BC2 L 22 m R56 -25 mm Commission in Jan. 2008 SLAC linac tunnel April 20, 2006 Injector/BC1 Commissioning 2 undulator L =130 m DL2 L =275 m R56 0 research yard Paul Emma [email protected] Machine Commissioning Plans Schedule developed in MS-Project One file/manager per system Link to milestones and events in Master file install Dec. ‘05 Injector-BC1 Sep. ‘07 Aug. Dec. ‘06 ‘06 April 20, 2006 Injector/BC1 Commissioning install 3 BC2 Dec. ‘07 LTU-und. Mar. ‘08 Paul Emma [email protected] April 20, 2006 Injector/BC1 Commissioning 4 Paul Emma [email protected] Injector Through BC1 Commissioning no laser-heater gex,y RF deflector April 20, 2006 Injector/BC1 Commissioning and slice 5 E E Paul Emma [email protected] Injector Through BC1 Commissioning (2) relative bunch length monitors BC1 E X-band RF April 20, 2006 Injector/BC1 Commissioning E slice gey 6 gex,y stopper Paul Emma [email protected] Many Measurement Simulations Done L1-Linac RF Phasing Slice Emittance Measurement 20-mm res. BC1 BPM = meas. sim. = calc. = y distribution = actual DL1 slice-emit on WS02 L1 RF phase Linac-1 RF phase scan (X-band off, BC1 bends at 295 MeV) rf gun set phase to -25˚0.5˚ Linac-1 21-1b 21-1d X April 20, 2006 Injector/BC1 Commissioning 7 Paul Emma [email protected] LCLS Drive-Laser Commissioning 8-Hour Cycle (5 days/week, 8/1/06 to 12/1/06, 16 total weeks) DAY SHIFT (8:00-16:00) W. White, J. Castro, D. Dowell, S. Gilevich, H. Loos, S. Peng (as needed) Also available: P. Emma, P. Krejcik, C. Limborg, J. Schmerge, et al. SWING SHIFT (16:00-24:00) (none) OWL SHIFT (0:00-8:00) (none) (see W. White) April 20, 2006 Injector/BC1 Commissioning 8 Paul Emma [email protected] LCLS Injector/BC1 Commissioning 24-Hour Cycle (7 days/week, 12/1/06 to 8/1/07, 32 total weeks) DAY SHIFT (8:00-16:00) 1 lead physicist, 1 physicist, 1 controls eng., 1 sys. engineer, 1 LCLS operator, 1 laser operator SWING SHIFT (16:00-24:00) 1 lead physicist, 1 physicist, 1 LCLS operator, 1 laser operator OWL SHIFT (0:00-8:00) 1 LCLS operator, 1 operator, 1 laser operator April 20, 2006 Injector/BC1 Commissioning 9 Paul Emma [email protected] Personnel Available for LCLS Injector/BC1 Commissioning Shift Leaders (initially) (1 per D/S shift) 1. Dave Dowell 2. Paul Emma 3. Patrick Krejcik 4. Cecile Limborg 5. Bill White LCLS Physicists (1 per D/S shift) 1. Sasha Gilevich 2. Henrik Loos 3. Heinz-Dieter Nuhn 4. John Schmerge 5. Dave Schultz 6. Jim Welch 7. Juhao Wu Laser Operators Controls eng. (1 per DAY shift) 1. Stephanie Allison 2. Mike Zelazney 3. Debbie Rogind 4. Diane Fairley 5. Stephen Norem 6. Arturo Alarcon 7. Doug Murray 8. Sergei Chevtsov 9. Karen Kotturi 10. Kristi Luchini 11. Sheng Peng 12. Stephen Schuh 13. Till Straumann Operations (1 per DAY & SWING shift and 2 per OWL) Visitors ? April 20, 2006 Injector/BC1 Commissioning 10 Sys. Engineers (1 per DAY shift) 1. Eric Bong 2. Carl Rago 3. Leif Eriksson 4. Richard F. Boyce 5. Jose Chan 6. Tim Montagne 7. Paul Bellomo 8. Antonio de Lira 9. Dave MacNair Accelerator, ILC, SSRL 1. Franz-Josef Decker 2. Jim Turner 3. Rick Iverson 4. Doug McCormick 5. Joe Frisch 6. Marc Ross 7. Jeff Corbett 8. James Safranek Paul Emma [email protected] Man-Power Requirements (12/1/06 – 8/1/07) 32 weeks total (12/1/06 to 8/1/07, minus 2 weeks) 80% coverage (downtime) 14 lead-physicist shifts/week 14 physicist shifts/week 7 controls eng. shifts/week 7 sys. engineer shifts/week 21 laser operator shifts/week (28 operator shifts/week) Average of 2.8 shifts/week for each lead physicist Average of 2.0 shifts/week for each physicist Average of 0.5 shifts/week for each controls eng. Average of 0.8 shifts/week for each sys. engineer Average of 4-5 shifts/week for each laser operator (32 weeks)(214 + 27 + 21)(80%) 1600 man-shifts = 12900 man-hours 6.5 man-years (+ 2.9 from op’s) April 20, 2006 Injector/BC1 Commissioning 11 Paul Emma [email protected] LCLS Commissioning Parameters Parameter Value Comments RF rate 30 Hz 30 Hz in linac (possible short-term 120 Hz linac rate in L0-BC1 for feedback tests, etc) - 120 Hz in gun for short time to verify full rate Beam rate ≤30 Hz 30 Hz e- beam as baseline – possible 120-Hz tests in L0-BC1 for short term verification of feedback, etc Drive-laser rate 120 Hz 120-Hz all the times – pulse-picker provides e- rate as required above 200-500 pC 200-500 pC, depending on QE and diagnostics short spans at 10 pC – later in ’07 we explore 1-nC Drive-laser pulse length 10 ps fwhm 10 ps fwhm startup with possibility of 6-ps at 0.2 nC later – early laser tests may provide path to more convenient pulse-length changes Gun gradient 120 MV/m, although 110 MV/m is adequate in ‘07 Bunch charge April 20, 2006 Injector/BC1 Commissioning 120 MV/m 12 Paul Emma [email protected] Issues Controls will be mixed (SLC & epics) and capabilities may be limited initially Most High-Level Applications (emittance, bunch length, feedback) must done through MATLAB as a temporary solution Most LCLS physicists not yet experienced in SLAC control room with SLC controls Help from operations group will be needed April 20, 2006 Injector/BC1 Commissioning 13 Paul Emma [email protected]