1. D2 P 2Q Q4Q4 S Q2Q2 Q2Q2 Q3Q3 Q3Q3 Q4Q4 S A1I A2I 2333 230 57 P1DP2D D1 FPD OVERVIEW p P_bar

2. IP2D / IP1DEP1D / EP2D 5.12 5.22 5.28 18.0 22.08 18.0 6.88 25.68 5.6 22.2 SEPARATOR EP1D ~25 kHz IP1D ~26 kHz IP2D ~100 kHz Protons AT THE PROTON SIDE WE HAVE THAT THE RATIOS OUT/IN ARE EP2D ~0.5 kHz antiprotons

3. According to the rate ratio there are ~6 times more particles after the proton bunch crosses the separator. Also there is a factor of ~20 in the rate at the outside of the same separator for the antiproton bunch. These numbers indicate that particles are being created in the separator; these problems may be due to beam-gas scattering or to misalignment of the separator with respect to the beam. Need to make some tests like turn on the vacuum pump of the separator more often, turn on/off the HV of the separator to see if some change is made. Other tests could be to measure the halo rates with other pots at the same stations in order to check if the rates are the same at the four positions within the same castle.

4. EA1I / EA2IIA1I / IA2I 0.41 1.26 0.6 0.99 1.1 1.1 1.9 1.1 SEPARATOR IA2I ~25 kHz EA2I ~10 kHzEA1I ~20 kHz Protons AT THE ANTIPROTON SIDE WE HAVE THAT THE RATIOS OUT/IN ARE IA1I ~ 40 kHz Antiprotons According to these rates separators are behaving normally