On shift: GL , AB             16:00 - 00:00

Logbook 7 pages 302-304 , logbook 8 page 1

Ecm = 3526.2 MeV

Run 5746        70.99 nb-1
Run 5747       101.02  nb-1
Run 5748    under way

Ibeam at start : 38.01 mA                Ibeam at end :   27.90

Typical sigmaP: 1.4 MeV/c for runs 5746 and 5747 ,   1.5 MeV/c for run 5748 so 
far

Comments: 
we started taking data at 17:34; the beam width during run 5746 was not 
satisfactory (1.5 MeV/c) and the beam loss rate  was high (up to 3 mA/hr) so 
data taking was suspended to allow Martin Hu to improve the beam situation. He 
managed to bring sigmaP down to 1.3 MeV/c and, even though the loss rate was 
still very high we restarted taking data; after 1.5 h sigmaP was high again 
and we paused the run to allow some beam manipulation. After 50 min  the 
situation was not improved so after some more cooling , with sigmaP around 
1.35 MeV/c, we resumed data taking, but the DAQ froze and we had to perform a 
drt_fresh_start for run 5748.
Throughout the shift there was (and there still is) a persistent smell of 
burned rubber in AP50 near some of the quadrupole power supplies, which were 
surveyed by people from MCR, but without discovering the problem.
We have seen smoother shifts.....
Have a good night,

Giovanni and Alberto