bpm status
DESCRIPTION
BPM status. Pengjia Zhu 2013.8.28. survey uncertainty caused bpm uncertainty. 1. position survey ~ 0.15 mm. 2. angle survey ~ 0.0001 deg. 3. harp wire survey ~ 0.15 mm. 4. harp scan minumum step ~ 0.07 mm. position uncertainty at bpm -> 0.25 mm. 3.13 bpm calibration setting: autogain - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/1.jpg)
1
BPM status
Pengjia Zhu
2013.8.28
![Page 2: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/2.jpg)
2
survey uncertainty caused bpm uncertainty
1. position survey ~ 0.15 mm
2. angle survey ~ 0.0001 deg
3. harp wire survey ~ 0.15 mm
4. harp scan minumum step ~ 0.07 mm
position uncertainty at bpm -> 0.25 mm
![Page 3: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/3.jpg)
3
3.13 bpm calibration setting:autogaindidn't subtract pedestal
![Page 4: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/4.jpg)
4
timeline
3.13 3.14 3.173.9 3.273.6
auto gain fixed gain
straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
3.13 calibration constant covered
2.257GeV
3.14 straight through harp scan
3.16 2.5T harp scan
3.12 5T harp scan
![Page 5: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/5.jpg)
5
timeline
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
2.257GeV3.14 straight through harp scan(100nA)
BPM A BPM B
![Page 6: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/6.jpg)
6
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
2.257GeV
10 mm carbon hole->16.1 mm raster size->~15.3 mm at BPM A
3.16 run 3217 C12 hole check
using 3.14 constantLet's focus on BPM A first
![Page 7: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/7.jpg)
7
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
2.257GeV3.16 run 3217 C12 hole check
raster shape at BPM A ~15.5mm
using 3.14 constant
![Page 8: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/8.jpg)
8
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
3.17 run 3273 raster size calibration3.13 run 3146 raster size calibration using 3.14 constant
![Page 9: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/9.jpg)
9
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
3.13 run 3146 raster size calibration
BPM A BPM B
Then focus on BPM B
using 3.14 constant
![Page 10: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/10.jpg)
10
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
2.257GeV3.17 run 3273 raster size calibration
BPM A BPM B
BPM B constant destroyed
using 3.14 constant
![Page 11: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/11.jpg)
11
timeline
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
3.16 2.5T harp scan
use BPM A and harp 05 to check BPM B
BPMA BPMB
harp 05
-940.5mm -676.5mm-814.3mm
if +-0.1mm in BPMA +-0.1mm in harp--> +-0.24mm in BPMB
2.5T will bend beam 0.1mm
![Page 12: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/12.jpg)
12
x
hall coor
y
hall coor
x
local coor
y
local coor
BPM A -1.24 -95.88 -1.98 2.07
Harp 05 -1.49 -81.33 -2.39 1.27
BPM B
transported
from A and harp 05
-1.77 -65.44 -2.82 4.08
BPM B
use 3.14 const
0.86 -67.67 -0.19 1.86
x
hall coor
y
hall coor
x
local coor
y
local coor
BPM A 0.44 -95.33 -0.31 2.62
Harp 05 0.41 -81.22 -0.49 1.37
BPM B
transported
from A and harp 05
0.38 -65.82 -0.66 3.70
BPM B
use 3.14 const
1.77 -67.57 0.73 1.95
incorrect BPM B constant
![Page 13: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/13.jpg)
13
timeline
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
3.12 5T harp scan
will update soon
![Page 14: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/14.jpg)
14
timeline
3.13 3.14 3.173.9 3.273.6straightthrough
2.5T90 deg
2.5T90 deg
5T6 deg
septumfired
3.292.5T90 deg
div=2 for A and Bdiv=4 for A and B
different div setting caused BPM B constant changedbut not affect BPM A
don't have enough harp data for div=2will try to find a way to fix it
also need to find a way to get bpm resolution
![Page 15: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/15.jpg)
15
bpm rotation --- correct
![Page 16: BPM status](https://reader035.vdocuments.net/reader035/viewer/2022062408/568139b8550346895da1565f/html5/thumbnails/16.jpg)
16