Minutes of the E895 meeting Graduate Chemistry Rm 412, SUNY Stony Brook Monday 7/10/95 Attending: Gulshan Rai (GR), Bob McGrath (RM), Roy Lacey (RL), Mark Gilkes (MG), N. Ajitanand (AJ), Paul Chung (PC), Eric Colin (EC), Jerome Lauret (JL), Erwan LeBras (EL), Tatiana Magda (TM), Meena Srivastava (MS), John Alexander (JA), Steven Gushue (SG), Jacques Bouffety (JB). The meeting is now moved to Mondays at 4:00 pm. Gulshan Rai described the events of the past week. The MPS magnet will be powered up on the 24th at the earliest, and this then becomes the earliest date for magnetic field mapping. Tom Case will arrive at this time to set up his system and begin working on the map. On Wednesday, the TPC scissor table will be reassembled so that the detector can be placed on it. The magnet control crates are slated to move into the MPS control room at around this time, along with the DAQ crates. On Thursday the TPC is expected to move to the MPS area from the warehouse in which it has been stored. We will then disassemble the shipping crate ourselves. Removing the lag bolts, panels and securing mounts will probably take several of us all afternoon. ...lots of discussion followed concerning the MPS magnet water leak. October is currently the earliest date for repair of the couplings on the cooling manifold; but if there is a problem when the magnet is energized for mapping, it may have to be repaired earlier. Mark Gilkes presented the current design for the target assembly. Both target and after-target scintillator are cantilevered into the re-entrant on shafts of adjustable length. The target and scintillator shafts are fixed to a vertical support outside the re-entrant, which rests on a base positioned on the floor of the magnet in front of the TPC. It was agreed that E895 and E910 may have different requirements for a target assembly, and the current E895 design, if used, would be replaced for the E910 run. ...discussion followed concerning the TPC laser and the various procedures and permissions required for its operation. The laser currently occupies a room in the Brookhaven Physics building which is not interlocked, and will have to be fitted with interlocks. Though the Physics building has rooms equipped for laser operation, they are in use and are too small in any case for the TPC laser. As the laser is a Class IV device, a safety review will be required. SG - People working on the laser will also have to have a retinal scan, which takes an afternoon of time. This is part of a physical administered by BNL. Prepared by: Mark Gilkes