1, Need Stored Protons (no-pol. and injection energy o.k.)
1)
Find target with ADC vs. TDC plots (middle strips )
① Gate timing
adjustments
② Target position
scan and/or beam steering
③ Carbon target vs.
empty target
2)
Detector performance check
① Strip by strip
number of hits distribution
② Strip by strip
ADC and TDC distributions
1.
Noise level check from pedestal width
2.
Rough timing resolution estimation
③ Strip by strip
ADC vs. TDC plots
1.
check the shapes strip by strip
2.
gradual change from forward to backward
④ Cross talk check
1.
Number of hit strips distribution(multiplicity)
2.
Adjacent ADC and TDC correlation(selected strips?)
3)
Carbon signal and background(i.e. prompts etc…)
① Background vs.
signal rates and compare w/calc.
② Angular
distribution of the carbons and BG
③ Threshold scan to
understand BG?
④ Timing (mostly
t0) check with Carbon kinematics
⑤ Other fragments
on the scatter plots
⑥ Decide on the
carbon band cut
4)
Consistency check
① Looking at the
right bunch?
② Asymmetry sign
O.K.?
③ Energy scale from
Tandem consistent?
④ Time zero
consistent with beam reflection?
⑤ Slewing
correction correct?
⑥ Thin vs. Thick
target comparison rate, shape and asymmetry(should be zero)
⑦ E dependence of asymmetry (should be
always zero)
2, Polarized Protons at Injection energy
1)
Polarization vertical
① LU+LD vs. RU+RD,
LU+RU vs. LD+RD, LU vs. RD,LD vs. RU as a function of ADC and TDC
② Elastic arm
measurement
2)
Polarization horizontal
① LU+LD vs. RU+RD,
LU+RU vs. LD+RD, LU vs. RD,LD vs. RU as a function of ADC and TDC
② Beam energy scan
to identify the rotation ( sinusoidal shape?)
③ Elastic arm
measurement (should be almost zero)
④ Can we use the
elastic arm as a luminosity monitor
3, Accelerated polarized protons
at
least same items in injection energy horizontal case
Questions
1)
What if the Si gain changes? (scale by rate?)
2)
How long can target survive
3)
Does the target glow? Does it bother Si?