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User name okayasu
Log entry time 08:04:54 on August 11, 2005
Entry number 103445
keyword=Current optics study status for ENGE arm
Reflecting real beam size at the target point;
dx = ~0.084 mm, dy = ~0.022 mm,
Also, taking account 8% ramp up for splitter magnet
(in the previous datacard for RAYTRACE, it didn't.),
I adjusted some parameters of the datacard.
Fig. 1: x'f vs xf correlation on the focal plane.
Fig. 2: yf vs xf on the focal plane,
Fig. 3: y'f vs xf on the focal plane,
Fig. 4: yf vs x'f on the focal plane.
In each figure, red means real events, navy for simulation events.
As I reported on log# 103405, due to the ROC11 crash,
distribution on the ENGE focal plane was partialy destroid.
Current acceptance:
Pc = 373.75 +/- 38.5 %
|x't| < 300 mrad
-115 < y't [mrad] < -55
Also, I'm now calculating matrix selecting events
which passed centre position(Not exactly only centre!!) of the sieve
slit/collimator,inorder to avoide edge of the acceptance.
Figure 1
Figure 2
Figure 3
Figure 4
