G2 cooking status

Welcome to g2 group home!

Cooking is over !

Total number of files cooked is 2328. August part (electron beam energy 2.478 GeV) has 1669 files.
September part (electron beam energy 3.115 GeV) has 659 files.

Follow links below to see details:

My message that I've sent to g2_run mailing list at the beginning of cooking that describes cooking conditions and location of all files.
g2_run mailing list is appropriate place to discuss everything about g2 data, send you concerns etc.
You may also check clas_photon mailing list for useful information related to all photon runs.
Final results of quality check from Patrizia and her message.

Based on Patrizia's results and my own I compiled a list with the status and comments for each file cooked.
This information could be found in two tables. One is for 2.478 GeV, the other for 3.115 GeV.
They are big! It takes a while to download them.

Some explanations for those tables.

First column is file status as follows:
means this file is "good" for the analysis until someone tells otherwise.
means this file should NOT be used in the analysis. They are highlighted also.
Next five columns show presence of the files on the silo:
"01" status of the cooked files:
"+ " means there is only one cooked file runXXXXX_cooked.AYY.00 present
"++" means there is extension file runXXXXX_cooked.AYY.01 also present
"N" SEB Ntuple is present
"D" Deuteron skim file is present
"K" Kaon skim file is present
"P" photo disintegration skim file is present
The rest is obvious.

Now some general comments.

We considered run as a "good" run if the normalyzed proton yiled per photon per T-counter was stable and consistent with the other runs and other T-counters.

T-counter T55 was not stable during entire August part of the run.
T-counter T53 was not stable during entire September part of the run.
They should be removed from the analysis.

T-counters T33,34 have lower trigger efficiency. They could be recovered via cross normalization between 2.478 and 3.115 GeV.

Runs 20296-20298 had R2S1 drift chambers off. Otherwise they are good and could be used for the analysis
keeping in mind that acceptance is about 5/6 compared to the rest of the runs.

Main part of the cooking was finished on March 16. After that I've recooked some of the files.
As a result, some of the files have been replaced on the silo. If you retrieved data before that, you need to update your files. Check the time stamps for the silo files. Those with the time stamp between March 18 and April 1 have been recooked/replaced.

There is one bad news. After cooking it was discovered that nt10maker did not work with the extension files.
As a result, ntuples produced for the files that have "++" in "01" column are incomplete!
I fixed the code and put it in CVS. Those of you who wants to use these ntuples must recreate some of them (those with "++") from the cooked files and. Make sure you use -k<tripfile.trip>command line option, with appropriate trip file, to make it consistent with the calculated photon flux.

If someone finds other files that are "bad" and should be excluded from the analysis, let me know, I'll update tables.

I have not updated caldb with constants from our maps yet, but I definitely will do that and let you all know when it is done. In a mean time use our Maps in /work/clas/production/g2a/pass1.1/PARMS/.

This page is maintained by your friendly chef E. Pasyuk