On shift: GG,MO 0:00 - 8:00 Logbook 8 pages 12-17 Ecm = 3523.3 MeV Run 5755 Pedestal run Run 5757 in progress Ibeam at start of the shift:47.5 mA Ibeam at end of the shift: 40.05 mA Tipycal sigmap = 1.4 MeV/c Comments: We(KG,GG,MO) started taking data at 2:27; Eleonora,Gigi e Matteo came to check the situation of the cryostat and the fibers. They have changed some control parameters in order to optimize the liquid helium usage. The beam emittance during run 5757 was not satisfactory and the beam loss rate was high (up to 2 mA/hr). 3:00 Data taking was suspended and the Jet was turned off to allow to Giulio to cool the beam more effectively. 3:45 life time 270 h; Jet turned on at low density and slowly(10 min) increased to 1.3 10^14 atoms/cc; run resumed. 4:43 Loss rate 2.2 mA/h. Jet off. Run paused. 5:29 life time 300 h; Jet turned on at low density and slowly(30 min) increased to 1.1 10^14 atoms/cc; 6:16 run resumed Since then we have experienced an oscillating life time from 50 to 25 h. Have a good day, Gabriele e Margherita