Minutes of the 19 July 1998 RadPhi Collaboration Meeting

G. Adams, D. Armstrong, R. Jones, J. Kolata, A. Kuryliov, A. Longhi,
L. McGlinchey, J. Miller, P. Rubin, C. Steffen, E. Walker

July 21, 1998

Abstract

While not without its glitches, the June run was very successful in terms of engineering. Numerous impediments to the achievement of the goals of the proposal were removed. From the data collected, additional measures have been identified that are likely to enhance the experiment further. Nearly all of these-including, implementing a "level 1.5" trigger and other trigger improvements; "stiffening" the photo-tube bases, lowering the gain, and tightening and narrowing the timing of the CPV; increasing the length of the usable tagger focal plane (in case of running with a photon flux equivalent to that produced by a 100 nA electron beam on a 10^-4 radiator); and narrowing the ADC gate-are relatively conservative and inexpensive means for realizing proposed objectives. The feasibility of a barrel detector around the target requires evaluation in terms of its efficacy for increasing acceptance and background rejection, its trigger-ability, its commissioning costs, and its installation requirements. With LGD components at BNL translocated to and installed at JLAB, and the identified upgrades completed, all primarily during January 1999, the Collaboration expects the experiment to be ready for high-energy photon beam data-taking in 1999.