LCLS Linac Design

1
LCLS Linac Meeting

• General meeting to integrate systems
• More details in system meetings (e.g., RF or ESD)
• Review status and schedule, provide communication
• Once per two weeks Wed. at 930 here in
  Alexander?
• Linac Introduction (P. Emma)
• Construction and Installation Schedule (E. Bong)
• Corrector Upgrade (P. Emma, W. Linebarger)
• Linac BPM upgrade ? (R. Johnson)
• Bunch Length Monitors ? (P. Krejcik)
• Questions, comments, ideas ?

2
LCLS Linac Design

• New injection point at 21-1a
• Two new chicanes (at 21-2 and 24-7)
• Rebuild FFTB using existing magnets

3
L1-Linac and BC1 Optics

• Remove five 10-ft RF sections (21-2a,b,c,d
  21-3a)
• Cut down two 10-ft long acc. sections to 9.4-ft
• 9 new quads, 4 bends, 8 BPMs (plus correctors)
• New 60-cm long X-band RF section at 21-2a
• 4 new wire scanners, two new screens (OTR?), 1
  x-collimator

4
L2-Linac Optics
4 new wire-scanners

• No new magnets in L2 (except corrector upgrade)
• One new 25-A bulk quadrupole supply in each of
  sectors 23 24
• 4 new wire scanners

5
BC2 Optics

• Remove eight 10-ft RF sections (24-7a,b,c,d
  24-8a,b,c,d)
• 4 new quads, 4 bends, 4 BPMs (plus correctors)
• New 2-m long super-conducting wiggler magnet at
  24-7a
• 1 new screen and x-collimator in chicane

6
Optics in L3-Linac
move 2 existing sector-28 wire-scanners
Transverse Deflector (25-5a)
screen (Q25-901)

• No new magnets in L3 (except corrector upgrade)
• One new 25-A bulk quadrupole supply in each of
  sectors 25-29
• move two existing wire scanners
• Move transverse RF deflector from 29-4 to 25-5a
  and add screen at 25-901

7
Optics Through DL2
(uses existing FFTB bends and quads)
undulator

• Rebuild FFTB using existing FFTB magnets and BPMs
• 5 new wire scanners 2 screens
• 2 new vertical bend magnets
• Move single-beam dumper magnet dump to FFTB or
  BSY

8
Proposed Responsibilities

• RF systems (R. Akre, A. Hill)
• Mech. engineering for L1/BC1 (L. Eriksson, E.
  Bong)
• Diagnostics, e.g., bunch-length monitors (P.
  Krejcik)
• Power conversion controls? (W. Linebarger)
• BPMs upgrade (R. Johnson)
• Magnets BC1 1Q5.6 (C. Spencer)
• S.C. Wiggler (J. Welch)
• e- dump (M. Woodley)
• Operations liaison (M. Stanek)