IPUs of CTF3: Measuring the beam with only a scope
The exact low gain coefficients measured on a scope in the Control Room are in the table below.
|
BPM |
Low Gain |
|
The
difference between the approximate factor of 5.5 A/V and the exact value is
calculated as: |
|
|
A/V |
d
[%] |
|
||
|
402 |
5.54 |
0.7 |
|
|
|
502 |
5.62 |
2.1 |
|
|
|
590 |
|
|
|
|
|
690 |
5.60 |
1.9 |
|
|
|
790 |
5.52 |
0.5 |
|
The coefficients measured
on 30/10/03 |
|
825 |
|
|
|
|
|
890 |
5.59 |
1.6 |
|
|
An example
|
|
|
Data for low gain S @ 4´20 mV = 80
mV DH @ 0.8´20 mV = 16 mV DV @ 0.3´20 mV = 6
mV Results
|
|
This
is a historical measurement of the very fist beam passing BPM 402 on
15/07/03. |
(c) M.Gasior,
AB/BDI/PI. Last updated: 30/10/03.