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