RUN #2113 start @ 21h37; stop 0h14 @
target n°4. CH2 104 µm
All triggers, (no LISE)
Divisions CATS1 3. 10**4. PPT 3000 ; EXL 10**4
Evening shift team: Valérian (offline); Valérie (Online).
with Olivier, Jean-Eric and Marlete.
Between 21h37 and 22h. Beam intensity from 4000 pps increasing around 7. 10**4 pps then down to 800 pps, fluctuating fastly.
Machine operators are trying to compensate the fluctuations.
cf current of T4 around 9.4 µA (fluctuates between 9 and 10 µA) for HV set at 60 V. Strong increase around 13 µA during a few minutes.
cf HV_MUST2run2113_29Mayat21h50.png
Between 23h10 and 23h20 the beam rate was evolving from 80-88k to 90-100 k and the current was fluctuating in T4 from 8.8 to 9.9 µA.
Beam rate is reduced at the beginning of the run, around 4000-5000 pps. See Scalers_Run2113initAt21h39.png
Then around 60k pps at 21h46; at 77k pps at 21h52, at 98k pps at 22h06 but very unstable and then down to 30kcps.
Around 110k pps at 22h35. cf ScalersRun2113_110kAt22h35.png
Stabilization around 88k and 100k pps between 22h50 and 23h05 (hoping we will have the beam rate around these values during the night)
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CHECKING THE MISSING STRIPS X and Y IN THE TELESCOPES:
XE || MM1: X44 || MM2: X3, X4, X5, X6, X31 || MM3: all X OK || MM4: X8, X9, X45, X128 || MM5: XE all OK
YE || MM1: Y25, Y123, Y124 || MM2: Y100, Y128 || MM3: all Y OK || MM4: Y29, Y62, Y123, Y126 || MM5: Y15, Y39, Y98
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