1. Current status
Minjung Kim

2. contents
SMD gain fit
Beam position scan
Local polarimetry

3. SMD ADC distribution: 2 exponential fit
[0]*exp{ -(ADC-ped)*[1] } + [2]*exp{ -(ADC-ped)*[3] }

8. Fit parameters [0]*exp{ -(ADC-ped)*[1] } + [2]*exp{ -(ADC-ped)*[3] }
If [1] propotianal to [3], gain can be set propotianal to [1] ([3]).
-> [1], [3] correlate

9. [1], [3] correlation: correlate
p1=[1], p3=[3]
set gain for each channel:
Relative gain of each channel= ( [3] + [1]*3.111 )/0.2
Gain= ( [3] + [1]*3.111 )/0.2 /average or Relative gain
-> make gain average=1

10. Comparison with DB

11. XY distribution: left-DB gain, right-New gain run386408 south

12. run north

13. run south

14. run north

15. Phi asymmetry for center

16. Asymmetry vs energy

18. Beam position scan
Assume center for 81 positions (-2.0~2.0, 0.5 cm interval. x,y 9x9 ), then calculate raw asymmetry
Position with largest asymmetry will be center
Plots for all fills :
plot/

19. Beam position scan for transverse fill

20. Beam position scan for longitudinal fill
Several fill’s example.
Should check asymmetry for several position because it is hard to see center/moves

21. Longitudinal component for run13
Ignore fitting.

22. plan Organize results. Check code’s bug.
Finish analysis note (~ middle of May )

23. Back up

24. Red points: I fit with [0]
Red points: I fit with [0]*cos(x-[1]), so [0] can be (-) depend on what value it get [1]. If see only absolute value, this result makes sense.