Table rms tolerance budget for



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tarix07.11.2018
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Table 1. RMS tolerance budget for <12% rms peak-current jitter (column 3) or <0.1% rms final e energy jitter (column 4). The tighter tolerance is in BOLD, underlined text and both criteria, |I/I0| < 12% and |E/E0| < 0.1%, are satisfied with the tighter tolerance applied. All tolerances are rms levels and the voltage and phase tolerances per klystron for L2 and L3 are Nk larger, assuming uncorrelated errors, where Nk is the number of klystrons per linac.

Parameter

Symbol

I/I0| < 12%

|ΔE/E0| < 0.1%

Unit

mean L0 rf phase (2 klystrons)

0

0.10

0.10

S-band deg

mean L1 rf phase (1 klystron)

1

0.10

0.10

S-band deg

mean LX rf phase (1 klystron)

x

0.5

0.5

X-band deg

mean L2 rf phase (28 klystrons)

2

0.07

0.07

S-band deg

mean L3 rf phase (48 klystrons)

3

0.5

0.15

S-band deg

mean L0 rf voltage (1-2 klystrons)

V0/V0

0.10

0.10

%

mean L1 rf voltage (1 klystron)

V1/V1

0.10

0.10

%

mean LX rf voltage (1 klystron)

Vx/Vx

0.25

0.25

%

mean L2 rf voltage (28 klystrons)

V2/V2

0.10

0.10

%

mean L3 rf voltage (48 klystrons)

V3/V3

0.5

0.08

%

BC1 chicane

B1/B1

0.01

0.01

%

BC2 chicane

B2/B2

0.05

0.05

%

Gun timing jitter

Δt0

0.8

0.8

psec

Initial bunch charge

Q/Q0

2.0

4.0

%

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