N. BlaskovicFONT Meeting1 November 2013 week 2 FONT shift summary N. Blaskovic.
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Transcript of N. BlaskovicFONT Meeting1 November 2013 week 2 FONT shift summary N. Blaskovic.
N. Blaskovic
FONT Meeting 1
November 2013 week 2FONT shift summary
N. Blaskovic
Introduction
• Data from shift on 28th November• 10x1 (standard) optics used on day• Variable attenuators: 40 dB throughout
FONT Meeting 2N. Blaskovic
Intra-chamber misalignment
• Minimising I and Q simultaneously in all 3 IP BPMs was unsuccessful
• Mover tilt required for beam to lie on axis of all BPMs appears to be outside mover range
• Q remains large if beam does not travel on BPM axis regardless of beam position
FONT Meeting 3N. Blaskovic
Intra-chamber misalignment
FONT Meeting 4N. Blaskovic
IPA IPB IPCZV2X
0.184 A(~nominal)
ZV2X 0.224 A
max
min
max
minmover base
mover base
beam
beam
?
Calibrations
• IP BPM calibrations performed with beam waist on BPM being calibrated
• Calibrations performed with beam and mover tilt that allowed (I, Q) ≈ (0, 0) at some point over calibration:– ZV2X: 0.184 A for IPA and IPB calibration– ZV2X: 0.224 A for IPC calibration
FONT Meeting 5N. Blaskovic
FONT Meeting 6N. Blaskovic
IPAmoverScan3 on 281113
FONT Meeting 7N. Blaskovic
IPBmoverScan2 on 281113
FONT Meeting 8N. Blaskovic
IPCmoverScan5 on 281113
Jitter runs
• Jitter runs performed with different waists.• Expected jitter if waist at IP (Tauchi-san):
FONT Meeting 9N. Blaskovic
IPA IPB IP IPC
jitter
0
FONT Meeting 10N. Blaskovic
jitRun1 on 28111340 dB
waist at IPB
!?
FONT Meeting 11N. Blaskovic
jitRun2 on 28111340 dB
waist at IPAdrift?*
* No drift removal, sorry!
FONT Meeting 12N. Blaskovic
jitRun3 on 28111340 dB
waist at IPAdrift?*
* No drift removal, sorry!
FONT Meeting 13N. Blaskovic
jitRun4 on 28111340 dB
waist at IPA
IPA IPB IP IPC
jitter
0
as expected
FONT Meeting 14N. Blaskovic
jitRun5 on 28111340 dB
waist at IPAdrift?*
* No drift removal, sorry!
FONT Meeting 15N. Blaskovic
jitRun6 on 28111340 dB
waist at IPB
IPA IPB IP IPC
jitter
0
as expected
!?
FONT Meeting 16N. Blaskovic
jitRun7 on 28111340 dB
waist at nominal IP
IPA IPB IP IPC
jitter
0
as expected
FONT Meeting 17N. Blaskovic
jitRun8 on 28111340 dB
waist at IPC
IPA IPB IP IPC
jitter
0
as expected