Minutes from target meeting held 28th February 2002 in 892-2-009 14:30 a) Shift list for the target members permanently at CERN is now available and is being filled. Run coordinator for 2002 Fulvio Tessarotto agreed about sharing the shifts in the collaboration. b) LHC/Operation was contacted to ask about the availability of LN2 and LHe for cool down of magnet and starting the cryostat. Basically they agreed about our plan of starting the cool down on week of 15th April. Barth asked us to leak test pumping system again (we did this already after warming up of the target). There will be small meeting at target platform Thursday 7th March 9:00 with the operators. c) Kaori checked polarisation of the material in early September when the microwave frequencies were tuned for positive polarisation in the down stream end of the cavity. The spread in polarisation looks similar as it was at the end of COMPASS run in October, when down stream end had negative polarisation. Kaori also produced first polarisation data for the last 2 weeks of the run. Yuris TE-calibration agrees quite well with Kaoris calibration, typically with 0.1 % relative error. Yuri pointed out that FM effect should be made more clearly visible in the polarisation plot. d) Yuri discussed about the TE-calibration consistency check based on Curie law S1 = C/T1. The ratio of surface areas between 1.44 K and 0.97K agree quite well with the temperature ratio. Jaakko asked Yuri and Kaori to summarise the TE-calibration in a short report. There was discussion on how the TE-calibration data should be used. Kaori took average of all the calibration constants obtained at two different temperatures and in different conditions for each material. The other possibility (needs more work) would be to use the TE-calibration constant according to the experimental conditions (e.g. SM1 on/off and pos/neg field). Yuri said that the measured spin-lattice relaxation times should be checked for homogeneity of temperature. e) TE-calibration for 2002 was discussed. Yuri proposed that only deuterium data is taken and that two temperatures are enough, but we should wait at least 3 x relaxation time after changing temperature before we start the TE-calibration. Jaakko pointed out that it is also useful to measure the relaxation time. Yuri wanted to have field information stored with the measured NMR-data. He also proposed taking the TE-calibration data in sequence bgr, sig, sig, bgr, sig..., i.e. one background file for two signal files. f) Pressure regulated roots back pressure bypass valve to storage tanks came from Helsinki. Jaakko leak tested it at CERN. It was tested for operation at Helsinki. It will be installed soon to the control panel. g) Fabrice received the dilution cryostat PC back from PC support. It has the new LabVIEW inside. Connection to PVSS is under work. Phone alarm using SMS from LabVIEW is already working. h) Yuri pointed out that we should get the IMPATT-diode system from Bochum to take EPR-data from 6LiD. Jaakko said that we can do this if we have time for it. It is not the first priority however. i) In Trieste meeting it was agreed that we try to load the target material on week of Monday 22nd April (or just on Monday). It was also agreed that we try to make publication of the first polarisation results of 6LiD based on 2001 data asap. The target remains as it was for run 2001. Only the NMR-coils are moved outside (there was suggestion from Gerhard/Werner to leave coil #9 and #10 inside for comparison). j) In Kaoris EST plot some of the 7Li negatively polarised points do not follow the theoretical curve. The NMR signal shape of these points is distorted. Yuri suggested polarisation loss due super radiance. Jaakko suggested non-equilibrium spin temperature between the 4-levels (7Li is spin 3/2) or some positively polarised spins. The proton data is difficult to use due to broad proton background. Yuri suggested that this could be water in Teflon. Jaakko thinks that it could also come from Stycast/Kevlar that was used to make support for the coil. For 2002 NMR coils Teflon insulation is not needed, since the coils are placed outside of the target cells. k) Kenneth came to CERN on Wednesday 27th of February. He will start to work full time for the target in April (his last working day at Caltech Pasadena California was 27th of February). Norihiro has to share his time this spring with Japanese SciFi detector, because the person now in charge will leave CERN in April.