1. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 1 Injector/BC1 Commissioning (Dec. 1, ’06 through Aug. 1, ‘07) P. Emma LCLS FAC Meeting Accelerator Systems Breakout April 20, 2006 LCLS

2. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 2 LCLS Accelerator Schematic and Time Frames SLAC linac tunnel research yard Linac-0 L =6 m Linac-1 L  9 m  rf   25° Linac-2 L  330 m  rf   41° Linac-3 L  550 m  rf  0° BC1 L  6 m R 56   39 mm BC2 L  22 m R 56   25 mm DL2 L =275 m R 56  0 DL1 L  12 m R 56  0 undulator L =130 m 6 MeV  z  0.83 mm    0.05 % 135 MeV  z  0.83 mm    0.10 % 250 MeV  z  0.19 mm    1.6 % 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 =  21-1 b,c,d...existing linac L0-a,b rfgun 21-3b24-6d X 25-1a30-8c Commission in Jan. 2007 Commission in Jan. 2008

3. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 3 Machine Commissioning Plans Schedule developed in MS-Project One file/manager per system Link to milestones and events in Master file Injector-BC1 Dec.‘06 BC2 Dec.‘07Dec.‘05Sep.‘07 Aug.‘06 install install Mar.‘08 LTU-und.

4. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 4

5. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 5 Injector Through BC1 Commissioning  x,y and slice EEEE EEEE RF deflector no laser-heater

6. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 6 Injector Through BC1 Commissioning (2)  x,y EEEE  E  slice  y stopper relative bunch length monitors X-band RF BC1

7. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 7 Many Measurement Simulations Done Linac-1 RF phase scan (X-band off, BC1 bends at 295 MeV) set phase to  25˚  0.5˚ 20-  m res. BC1 BPM L1 RF phase Linac-1 new rfgun 21-1b21-1d X = meas. sim. = calc. = y distribution = actual DL1 slice-emit on WS02 Slice Emittance Measurement L1-Linac RF Phasing

8. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 8 Also available: P. Emma, P. Krejcik, C. Limborg, J. Schmerge, et al. 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) DAY SHIFT (8:00-16:00) W. White, J. Castro, D. Dowell, S. Gilevich, H. Loos, S. Peng (as needed) SWING SHIFT (16:00-24:00) (none) (none) OWL SHIFT (0:00-8:00) (none) (none) (see W. White)

9. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 9 DAY SHIFT (8:00-16:00) 1 lead physicist, 1 physicist, 1 controls eng., 1 sys. engineer, 1 LCLS operator, 1 laser operator DAY SHIFT (8:00-16:00) 1 lead physicist, 1 physicist, 1 controls eng., 1 sys. engineer, 1 LCLS operator, 1 laser operator LCLS Injector/BC1 Commissioning 24-Hour Cycle (7 days/week, 12/1/06 to 8/1/07, 32 total weeks) SWING SHIFT (16:00-24:00) 1 lead physicist, 1 physicist, 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 OWL SHIFT (0:00-8:00) 1 LCLS operator, 1 operator, 1 laser operator

10. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 10 Shift Leaders (initially) (1 per D/S shift) 1.Dave Dowell 2.Paul Emma 3.Patrick Krejcik 4.Cecile Limborg 5.Bill White Operations (1 per DAY & SWING shift and 2 per OWL) Personnel Available for LCLS Injector/BC1 Commissioning 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 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 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 Laser Operators Visitors ?

11. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 11 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)  (2  14 + 2  7 + 21)  (80%)  1600 man-shifts = 12900 man-hours  6.5 man-years (+ 2.9 from op’s)

12. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 12 LCLS Commissioning Parameters ParameterValueComments 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 Bunch charge 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 120 MV/m, although 110 MV/m is adequate in ‘07

13. Paul Emma Injector/BC1 Commissioning Emma@SLAC.Stanford.edu April 20, 2006 13 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