Weekly Meeting Minutes - January 12, 2007

Attending: P. Ambrozewicz, E. Clinton, A. Gasparian, M. Ito, D. McNulty, E. Pasyuk, Y. Prok, A. Teymurazyan, M. Wood, M. Khandaker By phone: L. Gan

Summary of Meeting Discussions:

All. Nominate secretary: (next secretary: ???)

All. Approval of last meeting's minutes:

Approved. You can find the previous meeting minutes here. No comments on last weeks meeting minutes.

All. New Business: Itemized below

2: Analysis Review: It seems that slow but steady progress is being made in the formal reviews of the draft analysis notes. Liping provided several good comments for Eric's analysis; these comments can be found here. Also, two new notes were added: Jing's Compton note and Aram and Dan's Flux note.

3: Abstracts for April APS meeting: Primex will have 1 invited talk (Ashot), and three contributed talks: Pair production (Aram), Compton (Jing), and pi0 (Dustin). Abstracts have been submitted.

4: Other new business: There was discussion about extracting the photon flux energy dependence. Since we currently bin flux in term of Tchannels which have non-uniform, overlapping energy acceptances, we need to determine which Ecounters correspond to which Tchannels and in what proportion. In this way, we can obtain flux per Ecounter. More information on this can be found in this CLAS note. Aram says he will provide this (flux/ecounter) as a new pflux (library package) feature (in 2 weeks).

5: Other new business: The Tagger energy calibration correction (due to gravitational sagging of the tagger's focal planes since commissioning---details can be found in this CLAS note) was never implemented in our analysis. This correction is approximately 0.1 to 0.5 % for the top 11 Tcounters. Eric will implement this correction and interpolate a correction value for any holes (e.g. this and that) found in the correction table. We need to see what this correction does to the extracted lifetime result.