Minutes from target meeting held October 3 2014 in 892-1-B09 These minutes are available also from: http://wwwcompass.cern.ch/compass/detector/target/Minutes/2014/ a) Insert target cells into Kevlar tube on Friday and glue helium-3 guard to the upstream end. The short conical part glued on downstream end without semicircle. On Monday connect thermometer cables and SMA connectors for NMR to the target holder vacuum part. The wires of TTH7 in the microwave stopper are broken and this thermometer can not be used. The TTH5 has one broken wire and due to the three wire measurement the resistance has now small bias that needs to be corrected. The resistance bridge AVS46-UP does not operate correctly and needs to be investigated. The AVS46-3 has problems in reading the values with GPIB. b) Load empty target cells into mixing chamber on Tuesday afternoon. Pump out air from the mixing chamber with roots PR4 and rotary PP4. Fill 300 mbar helium gas into the mixing chamber from gas panel. Start two roots pumps to circulate the gas through the LN2 trap. Connect leak detector to target holder isolation vacuum. No helium leaks detected. Connect leak detector to access tube volume. Initial leak rate about 10^-5 mbar l/s and 1.5 10^-7 mbar l/s reached after two days of pumping. c) Kaori: test NMR circuit on Tuesday morning. After target loading all coils are operational, but coils #2 and #5 have small reflection when measured with time domain reflectometer. About 10 cm extensions are needed to the NMR cables. d) Warm up the LN2 trap on Wednesday. Pump out helium and impurity gas with small rotary pump PP3. Cool down the LN2 trap again and restart circulation helium on dilution cryostat. e) Fabrice: switch to helium cooling of the magnet on Wednesday. Magnet at 70 - 80 K temperature. Cooling down speed has been about 1 K/h. Small amount of ice formed on the turrets during precooling. Test diffusion pump safety interlock with Norihiro and Sylvain for loss of water cooling and compressed air. f) Norihiro: test microwave system interlock. The PLC receives now the "ok" status from the diffusion pump PLC. Working on the needle valve remote control. g) Yuri: test microwave system operation. h) Johannes: tidy up cabling coming below concrete wall and going to the target platform. i) Scrapping of the old vacuum diffusion pump was discussed. j) Christophe: read horizontal screen, vertical screen and cavity flow meters as analog voltages from HP34970A data acquisition unit. These voltages are now displayed on the target DCS display. In addition the helium-3 vapor pressure can be read during the TE-calibration from the same unit. The P3, P4, PT7, P10, P11 and PISOVAC have now warning limits and their color changes from green to orange on the DCS display in case of problems. k) Jan: new graphical interface to monitor target parameters during polarization build up. The web page can be accessed from COMPASS domain network under the link http://pcconl11/ptmonitor