ILC e optics

1
ILC e optics

• Connected all ILC e transports from pcapa (125
  MeV) to the end of booster (5 GeV)
• Normalized edge emittance ??x??y0.06 m and full
  energy spread ?25 MeV are used for edge beam size
  calculations

Textbook
Pessimistic
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Twiss _at_ Pcapa ppa ppatel
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Edge size _at_PCAPA PPA PPATEL
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Magnets _at_ PCAPA, PPA, and PPATEL system

• PCAPA and PPATEL are designed by Yuri-N. Magnets
  detail refer to his web http//www.slac.stanford.
  edu/yuri
• PPA uses J. Wangs structure 3?/4 mode, iris
  radius 2.3 cm, 4.3 m long total 8 structures.
• PPA solenoid 5 kGs with 34.5 m long

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PTRAN 6.2 km transport (e- side)
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PTRAN bypass from IP
600 m
68 m
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PTRAN 11.4 km transport (e side)
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Magnets _at_ PTRAN system
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Trombone system
For IP 1
SLC WTA provided by Mark W.
For IP 2
4.6 m
2.7 m
1.4 m
1.2 m
2.1 m
2.0 m
1.1 m
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Trombone matching arc dogleg
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Trombone edge size
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Magnets _at_ Trombone system
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Booster linac 400 MeV to 5 GeV
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Booster linac edge size
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Magnets _at_ Booster system
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Energy map
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R56 _at_ ILC e transport

• To avoid unnecessary compression, R56 need be
  smaller in the e transport upstream of the LTR.
• R56 in the individual pcapa, ppatel, PTRAN, and
  Trombone bending system smaller than 1 cm
• Total R56 in the e transport smaller than 1 cm,
  which is reasonable smaller.

Thank Mark and Yuri-N for numerous of great helps
and inputs.