Minutes from target meeting held April 24 2015 in 892-1-B09 These minutes are available also from: http://wwwcompass.cern.ch/compass/detector/target/Minutes/2015/ a) On Monday open Alcatel helium leak detector ASM181 analyzer cell and replace broken filament. Replace rubber gasket sealing of the cell with indium wire. Replace leaky safety valve on helium-4 evaporator pumping line with a new one. b) Start helium-4 evaporator pumps on Tuesday. Open needle valve NV1 to 7.0 to fill the evaporator during the night. Reduce flow to the evaporator on Thursday morning due to over filling. On Friday morning start condense slowly helium-4 into mixing chamber until 13:00 before end of access. c) Problems in keeping the nominal magnet liquid helium level on Wednesday evening. Stable operation reached on Thursday. d) Norihiro: prepare new capacitive pressure gauge for mounting on the helium-3 vapor pressure thermometer rack. e) Kaori: test Modbus connection in the LabVIEW system. This will be used to communicate between the NMR computer and the magnet control system. On Wednesday tune the magnet trim coils with the unpolarized proton signals at 1.5 K. The NMR coils inside the target cells give about five times larger signals than those mounted on the target cells. All the signals could be tuned within +-6 kHz in 600 kHz window except the coils #1 and #10. For the coils at the extremities the polarity of the current at the end trim coils need to be inverted.