[Tpe] Off Line Software

[Larry Weinstein]

Dear Folks,

As I watch the TPE people struggle with the calibration and 
reconstruction software, I am amazed at how needlessly complicated it is.

Let me give one very small but telling example.  There are two programs 
used to calibrate the drift chambers, trk_mon and trk_mon_lite.  The 
user should specify that he wants to calibrate using protons.  However, 
the '-p' flag includes protons in one program and excludes protons in 
the other.

A much larger example is that the reconstruction efficiency differs by 
about 10% for inbending and outbending tracks. We do not understand why.

In general, we appear to lack a coherent, well understood, offline 
software package.  This needlessly delays and complicates analysis and 
hence publication of our results.

It is too late to fix this for CLAS6, but I think that it is crucial to 
remedy this for CLAS12.

-- 
				Sincerely,
				Larry

-----------------------------------------------------------
Lawrence Weinstein
University Professor
Physics Department
Old Dominion University
Norfolk, VA 23529
757 683 5803
757 683 3038 (fax)
weinstein at odu.edu
http://www.lions.odu.edu/~lweinste/