Private:Hall D Staff Meeting, March 15, 2010 Present: Fernando Barbosa, Dan Carman, Mark Ito, David Lawrence, Lubomir Pentchev, Yi Qiang, Elton Smith (chair), Sascha Somov, Simon Taylor, Tim Whitlatch, Elliott Wolin, Glenn Young, Beni Zihlmann Elton * If you have been using the BIACAL account, please stop and start using 12CDBC instead. * Medium energy review stuff going out tomorrow. Dan * Transition Dan -> Lubomir is underway * Full-scale prototype out of cosmic test stand, back in clean room, Beni will do HV checkout + adding pure CO[2], to identify trouble with one layer + not procuring circuit boards until problems understood * about 2 weeks to diagnosing problems, then add 3rd layer * Mechanical prototype for new scheme in preparation * In 3 or 4 weeks detector back in cosmic test stand * Phase 3 budget for wire winding in hand * Working on budget estimate for IUCF work in the summer * First report back on copper beryllium wire, looks nice Lubomir * Has installed 3-D simulation of electric field, finite-element-analysis-like, more correctly, uses boundary element method: neBEM Tim * Solenoid + starting to get #2 going, get power supply hooked up + coil 1, small leak in nitrogen shield * CDC + plenum test, some wires penetrations leak, some don't + question on radiation test, whether good straws are really the good ones; spots seen after radiation exposure * Solenoid test plan progressing Elliott * Online meeting on Wed: + event display from Dave Heddle + rootspy (perhaps) * Working on DANA to EVIO conversion + will move to factory model + adding associated objects * Fixing ssh tunneling of cmsg: plan in place * EVIO improvements worked on for event display * More are racks available from Computer Center * Coil: + Yi will work on HMI + Scot Spiegel working in F117 wiring racks + Safety review committee: meeting this week to identify expert reviewers o Finesse PLC programming question, they cannot do anything bad * RS-232 connections: looking for a terminal server Simon * On tracking: speeding up Kalman code, changes that also might speed up ALT1 fitter * Working on understanding errors + Residuals and pulls have long tails * Studying the effects of material: we use averages over regions, wondering about adequacy of the accuracy Sascha * Studying electromagnetic background vis-a-vis different sizes of hole for FDC + Lubomir: there are two separate issues: effect of accidentals on tracking and rates produced by FDC on downstream detectors * Identified a problem with time of flight rate: playing with thresholds, rates adjacent to beam line pretty high, about 12 MHz. May need to split the bar. + Single ended bars OK * With Bill and Tim, checking tagger dipole magnet model, 6 cm narrower than before + two field maps, one from Yang, one from Bill using Ansys, want to implement into GEANT simulation and check them + goal: give Bill position of focal plane and position of microscope * Test stand for trigger running, has a flash, TI, running CODA, working with Hai Dong + Hai providing new features to test Yi * SiPM tests in Hall A: everything in hand except for bias voltage supplies + started moving things into hall + Hall will be closed this Wed., plan to have things set up before that + 2 weeks of commissioning + Sasha: SiPM location sees neutrons only or EM background as well? Yi: dominated by thermal neutrons David * Working with students * James working on rootspy, problem with tunnelling of cmsg messages + wouldn't work during multi-node test + N. b.: localhost is not the same as the loopback address + Carl working on a fix * Micah working on his thesis on the laser scanner + looking at the correlation between noise on cathodes and pattern recognition, noise added with mcsmear * Working on full event reconstruction, see presentations at the Offline and Physics working group meetings * Open House, meeting last week + May 1 + parking at north end of site + no exhibits around the ARC + volunteer t-shirts will be given + mounting boards for 4 posters + may have a 40x40 ft. area shared with 12 GeV + two tables just for us + computer monitor identified + could request a projector + requested power, 1.0-1.5 kW + Michelle Lechman wants a walk-through soon + Tim: BCAL module in lead storage building, needs to be released by radcon + possible display items: o model of Hall D o tagger model o barrel calorimeter model o CDC model, dowels o wire frame from FDC + will poll collaboration for posters, Sascha will make a nice one + will show Tim's installation movie Mark * Work done on make system: binaries depend on libraries * Bug fix in his fitter * Preparations made for changing location of main simulation and reconstruction top-level directory * Miscellaneous documentation improvements + Elton: need consolidate and cross reference docs on how to get started with a fresh build * We bought an ethernet switch for very local-area near Lorelei's cubicle Fernando * Working on qualification specs for FDC and CDC pre-amps * Some pre-amps came in, testing them now * There are safety issues for FCAL cables, sending inquiry to Safety Committee * Request sent out to collaboration for review of cable procurement decisions * Starting procurement of HV chassis * Update to system diagrams in progress * Connections database: Dave wrote one for PrimEx, Elliott has been studying IRMIS * Elton: update on flash 125? Fernando: new boards installed and running + power dissapation, 57 W for 72 channels, perhaps 60-80 W in the end + implies 1.3 kW in a crate, 2.2 kW is the crate rating Beni * Two of the straws that were radiation tested had their names mixed up + thin lamina does show some radiation effect, spots seen in electron microscope scans + thick version = 12-14 microns of Al, thin = 300 Angstroms * Contract with CMU for CDC construction still not awarded, hopefully this week Retrieved from "http://www.jlab.org/Hall-D/software/wiki/index.php/Private:Hall_D_Staff_Meeting%2C_March_15%2C_2010"