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(Apr. 15, 2003)

Phase and voltage jitter in each linac, plus charge and gun-timing jitter, cause final energy , peak current , and timing jitter. 250 MeV  z  0.19 mm    1.6 %. 4.54 GeV  z  0.022 mm    0.71 %. 14.1 GeV  z  0.022 mm    0.01 %. 6 MeV  z  0.83 mm

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(Apr. 15, 2003)

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  1. Phase and voltage jitter in each linac, plus charge and gun-timing jitter, cause final energy, peak current, and timing jitter. 250 MeV z  0.19 mm   1.6 % 4.54 GeV z  0.022 mm   0.71 % 14.1 GeV z  0.022 mm   0.01 % 6 MeV z  0.83 mm   0.05 % 135 MeV z  0.83 mm   0.10 % Linac-X L =0.6 m rf= -160 rf gun Linac-1 L 9 m rf  -25° Linac-2 L 330 m rf  -41° Linac-3 L 550 m rf  -10° new Linac-0 L =6 m undulator L =130 m 21-1b 21-1d 21-3b 24-6d 25-1a 30-8c X ...existing linac BC1 L 6 m R56 -39 mm BC2 L 22 m R56 -25 mm DL1 L 12 m R56 0 LTU L =275 m R56  0 research yard SLAC linac tunnel (Apr. 15, 2003)

  2. LCLS longitudinal jitter sensitivities for gun and each linac section

  3. RF Phase Jitter and Energy Feedback E E E = E0 E = E0 Dj Dj t t without energy feedback with energy feedback

  4. Gun Timing Jitter and Energy Feedback E E E = E0 E = E0 Dt Dt t t without energy feedback with energy feedback Energy feedback in chicanes causes 1-to-1 gun-timing to final timing jitter!

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