TWIST SOFTWARE MEETING MINUTES
				Oct 6, 2000


CPU time estimates:

Rob Mcdonald will run GEANT and estimate the time it takes to generate
events. Jim will run MOFIA and estimate the CPU time for the pattern 
recognition/first guess code. Maher will run the Kalman filter and estimate
the CPU time for the tracking. These estimates will be needed within a week.


CVS:

The new update of CVS is ready and has been tested on both ALPHA and LINUX.
Renee will send out email regarding the modifications in this new version, 
and instructions on updating accounts. The new CVS update has GEANT 1.3,
and various modifications to MOFIA.

GEANT 1.3 currently displays a message saying "track truncated". Renee and
Maxim will investigate this problem further.


Pattern recognition:

Various modifications have been made to the pattern recognition code, and
are currently being discussed by Jim and Art. Jim has written code to diplay
the groups of hits classified by the pattern recognition code as belonging to
one track. This will help in the testing process. Jim is now working on revising 
the first guess part of the pattern recognition.


New GEANT banks:

Maxim just finished creating new GEANT banks that will include information
about the event and tracks. A total of 12 variables were created, 4 are related
to the run/event: run#, event#, and two random seeds. The other 8 are related
to the track: track#, PID, 3 vertex coordinates and 3 momentum componenets.

Some modifications were suggested to Maxim (splitting up the bank in two: one
containing integer variables and the other containing real variables). Renee
also pointed out  that these banks may be tested by running MOFIA and using the
"dump" command" to view the contents of the bank.

A discussion was raised regarding the storing of the variables in the FFCARDS.
While the group agreed that storing them is useful, the question came up as
to whether these will be needed for use in the analysis or will only be stored 
for information purpose. The detailed discussion of this was deffered as it
wasn't considered a priority.


Distance to time conversion in GEANT:

Rob Mcdonald summarized the progress made in converting the distance to time
and time digitization and described the method that Dennis used for this purpose. 
Rob is currently in the debugging stage of the code and expect to have the code 
ready soon. Code cleaning and documentaion on all this will be done afterwards.


Energy loss and multiple scattering for the Kalman filter:

Sun-Chong has been working on deriving formulas for energy loss and multiple
scattering to be used with the Kalman filter. The results are posted at:

http://stoney.phys.ualberta.ca/~e614//Projects/E614TN/00048

These will need to be installed in the Kalman filtering code. However, since
the November run will only deal with cosmic ray tracking, Sun-Chong and Maher 
will focus right now on straight line tracking with no energy loss or multiple
scattering. 

Renee will help Sun-Chong to install MOFIA on his account. Once this is done 
Sun-Chong will start looking into the Kalman filtering code.


Extracting the Michel parameters:

A short discussion took place on whether we believe we are ready to start analyzing
data for the purpose of extracting the MP's. The detailed discussion was deffered 
for the next meeting.

-- 
==================================================================
   Maher Quraan                        	   TRIUMF               
   TRIUMF TWIST Collaboration	           http://www.triumf.ca
   email: quraan@triumf.ca                 4004 Wesbrook Mall
   phone: (604)222-1047 ext. 6333	   Vancouver, BC
   fax:   (604)222-1074                    Canada V6T 2A3

		http://www.thehungersite.com/

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