Present: Chris Allgower, Andy Bacher, Jack Doskow, Hermann Nann, Paul Pancella, Mark Pickar, Tom Rinckel
The meeting came to order at about 3:00 pm.
HARDWARE ISSUES
Tom has consulted with the scintillator shop about material for larger detectors at the end of the channel. We will order enough material to make them all 12" x 14", although the final design has not yet been determined.
Tom has also drafted the procedures for backing out the channel and restoring the Tagger to working order. The decision was made to remove all of our detectors to a safe storage place before the channel is moved.
Plates for the new target box are now expected in mid-June. Jack will oversee pressure testing (with Ted Hall) of the side windows as soon as one of the side plates arrives. This may or may not occur before Rinckel returns from vacation 6/18. Jack is also working on parts drawings for the internal gas jet target parts, the lead glass support stands, and the new shield for the 6-degree magnet. Hermann is still working on the revised calculations for this latter element. Pancella will consult with Walt Fox about the design for the new exit snout, and with Jack about mounting the PSD. We need to finalize the design of the cosmic ray paddles and locate scintillators to modify or material to build new ones.
SUMMER JOBS
The rest of the meeting was spent discussing possible tasks for REU students. It was noted that Adam Smith will arrive soon with a student of his own as well. Pickar will have one student assisting him with computer simulations of the experiment.
The possibility of developing a pulser system to set timing and make sure all detectors are working was discussed at length. As far as the lead glass array is concerned, the cosmic ray trigger can serve the desired purpose of constantly monitoring the health of all those elements. Perhaps we need only deliver a pulse to the cosmic ray scintillator paddles to calibrate their timing with the rest of the system, then the lead glass timing will be known relative to them from actual cosmic rays. It was not determined whether the channel scintillators need to be pulsed optically or whether an electronic pulse to the first amplifier stage is sufficient. In any case, it was not considered to be a large enough job for an REU project.
The meeting adjourned around 4:40 pm.