The software technical meeting
summary.
Main
problems were discussed at the software technical
meeting
(2005-June-23).
1. First version of newly definited cluster and timing link
library are
cross-checking. (Dustin and Vasiliy).
Need to discuss organization of timing links (next thursday,
July 7)
2. The analysis of the hardware bank showed the problem:
1. Main problem here is ERROR 7:
repeating of the address in data (see
example):
What to do: organize short
meeting (Dustin, Vasiliy and Eric) to define the
problem in decoding and create flag
3. Exceptions: We need to create exceptions to stop program
(if problems in brun):
Mark (?) will create.
4. Calibration using Compton (see
Elena slides).
Main problems (conclusions):
- The reconstructed
energy for some channel is about 1.2 times higher than expected
- It is clearly seen
time dependence of the coefficients.
- There is differnece
between left and right part of the detector.
What to do next:
- Event selection criteria
- use delta phi creteria to select compton event
- Investigate:
- dependence of left-right asymmetry on beam position
and angle on respect to calorimeter
- add low energy and study energy dependence of
coefficients
5. Investigation of LMS behaviour (see Dustin page)
Investigation of LMS gain correlation with normal gain was done.
- The width of the distribution comparing first and
last clibration is about 1-2%.
- Nevertheless for the glass PMT gain for calibration
is suprisingly increased preliminary by factor of 5% in comparison with
LMS sygnal.
- After compton calibration it is required to compare
LMS and electron calibration.
- The pi0-mass is slightly narrower for crystalls
using LMS .
6. Planning:
- cross-check of the new algorithm code (Dustin)
- cross-check of the timing
code
(Vasiliy)
- introducing chi^2 to
cluster
(Vasiliy)
- (shower profile definition and coordinate reconstruction is
required)
- taking into account shower leakage outside (inside) detector (Vasiliy)
- continue work with Compton (Elena)
- LMS study (Dustin)
- Coordinate resolution (Kelly)
- Students:
- pedestal sparcification is under study
- trigger bits are under study:
- the problem in veto2hycal was found (Mike?)
- study of epics data
- the
contents of epics file is strange (non printable characters and
wrong values) - need to investigate it (??).
7. Flags from other libraries.
Did not received any response from
other groups yet.