Minutes of the high energy beam test telephone meeting - July 1, 1998 Attendants: BNL: S.White, E.Kistenev, G.Young, N.Saito, Y.Goto CERN: T.Awes, M.Ippolitov, T.Peitzmann RIKEN: A.Taketani, H.Sato, H.Torii * Check list at CERN - Terry Awes No position detector chamber is available at CERN. Scintillator hodoscope (1mm strip) is available. Platform has CAMAC control and readout. Electron beam is available between 10 to 80GeV (5GeV is difficult). Counting house is available. - cable etc. WA98 has an account at CERN. * Status of BNL - Edward Kistenev The super-module is ready. Next week we can start to get data with new DAQ (pDAQ & pstaff). The new DAQ will be ready at the beginning of August. PbGl HIVOC module must be setup to operate on the same SGI. How to send SGI ? - custom issue How to send all ? - about 1,500kg for all (SM, SGI, laser, CAMAC crate, VME crate, cables) Shipping address is Tony (?, GSI technitian). After the test, the setup will be back asap to BNL for the installation of PMT's at the end of Sep. * Scheduling issue in whole PHENIX - Sebastian White Possible conflicts with the HETB were discussed with Sam Aronson at the PHENIX meeting in Ames (also present were N Saito, Y. Goto and H. Enyo). The current emcal installation schedule in RHIC does not conflict with the HETB but there has been some slippage in the past week. Nevertheless, Sam felt that schedule conflict could be avoided. The Mu id work in Japan is winding down and Hideto agrred that it would be a bad idea to let students involved in the HETB get involved in the Mu id work at BNL. Instead he will try to identify students with an interest in subject matter of the HETB and give them time to gear up for this project. We also discussed possible conflict with work at BNL with ONCS when our first PHENIX calorimeter readout board arrives from Oak Ridge. I subsequently discussed this with Paul Stankus. It turns out he and Musrock planning to do the initial setup with ONCS during this period so no involvement from HEBT participants is necessary. * Status of RIKEN - Naohito Saito RIKEN is providing the shipping and travel expense support for equipment and BNL participants for the test. * Request for the beam - Yuji Goto We have following goals for the high energy beam test of the EMCal. 1. energy non-linearity measurement -- 5 - 40(or 80)GeV electron 2. energy resolution measurement -- 5 - 40(or 80)GeV electron 3. response map (shower shape) -- electron 4. response for non-orthogonal incident particle -- electron 5. response for hadron -- 40GeV pi- I will summarize requirements for these goals and answers for these requirement from Konrad Elsener and Mischa Ippolitov. For 1., we require 1% accuracy of absolute beam energy. 250MeV accuracy is achievable for 40GeV beam. This is estimated from magnet uncertainties and misalignments. For 2., momentum bite should be less than 1%. This can be chosen to be less than 1% by a set of collimators. For 3., position measurement is required. There are some options. Scintillator hodoscope whose position resolution is about 300micron is available at the H6 beam line. We might prepare position detector from BNL. Delay line readout chamber might be available at CERN. Suggestions are necessary for which one should be used. For 3. and 4., moving table to put PbSc and PbGl SM's is necessary. It is available at the H6 beam line. (Not available at H8 beam line.) For 5., electron contamination in 40GeV pi- beam is required to be less than 0.1%. This is obtained by using ABSORBER and CEDAR. We also have to think about the number of particles. 700 pi- per spill is available for the big-spot beam with 1.8% momentum bite. This is rather small number to collect enough data. * Beam time schedule at CERN - Mischa Ippolitov 3 options of the schedule; 1)Changing beam line(we go on h8 in P2D) (H8 instead H6---10 days in P2d period: 3Sep-8Sep,14Sep-19Sep.) Positive: no influence of stray magnetic field, and 6 days during NA-45 running to debug detector. Negative: 3 days beam cut and could be some problem with X-Y table. (this beam line has no X-Y table, but I am not really shure if it is correct) For the PHOS we have X-Y table, but probably it is not suitable for you, because maximum weight which it can move only 200 kG. 2)We stays on H6 but shift our test from 3 Sept. to 27 Aug. (13 days from Sept.27(finish 10 September)) +:no beam lost, only 2-3 days running with NA-45 on H8(at the end) -:for us it a bit tight(we will finish PS test on 25 Of August), for you it is a very tight. 3)We will stay on H6, ATLAS behind us and debug detector with muons. (Sep.3-Sep.16, ATLAS behind us.) >From time to time they will ask some electrons. +: more time for PHENIX preparation. -: cut in beam time. option 2) is best for us. * More check list at CERN - Terry Awes Analogue scope ? - No analogue scope is available at CERN. CEDAR - manual ? expert ? operating parameters ? electron rate ?