1. MSWG Report – SPS OP Crew
Week 28
MSWG Report – SPS OP Crew
2/17/2019

2. Status of beams LHC beams: Fixed target beams: Ions: HiRadMat: Awake:
Successful deployment of 100 ns and 50 ns beams in the LHC – operational
LHC1 used for BCMS physics beam – operational (sometimes needs injection steering in TI2)
LHCINDIV with special INDIVs used for BSRT calibration – operational
Fixed target beams:
SFTPRO2 – operational (20/37/1120/20; sometimes at slightly lower DC for ZS)
Problems with intensity fluctuations in T2 – under observation
Ions:
Some tests on the ion cycle early this week
HiRadMat:
Prepared after dedicated MD; 3 injections with FT okay; 4 injections with -30kV okay – operational (dedicated run foreseen Wednesday from 8:00 – 22:00)
Awake:
Took beam regularly during week – operational
2/17/2019

3. MDs – week 27
4 dedicated MDs in parallel!
2/17/2019

4. MDs SFTPRO1: Coast test: High intensity MD: Q’’:
Chroma measured with and without extraction sextupoles (for simulations and to compute momentum spread).
Chroma appears much more positive than measured 2 years ago for same knob value.
Coast test:
Coast cycle entered into the supercycle
Coast sequence could finally not be launched due to block of access to the CBCM main folder.
High intensity MD:
Longitudinal measurements limited to 3 batches at 1.3e11 ppb
Transverse instability measurements taken wit multi- acquisition of headtail monitor
Q’’:
Checks on horizontal instability and on the effects of stabilization using Q’’ ongoing during night
2/17/2019

5. MDs Wideband feedback:
Longer term plan to measure TMCI mitigation at higher intensities.
2/17/2019

6. MDs Wideband feedback:
Longer term plan to measure TMCI mitigation at higher intensities.
Slotline kicker hooked up to power amplifiers. Slotline kicker times up. Relative phases of stripline and slotline needed to be corrected (access this morning)
2/17/2019

7. Incoming LHC MDs in 2 weeks – special beams: HiRadMat:
MD3284: Pb81+ (in principle already taken up to the SPS)
MD3300: BCMS with LHC bunch intensity of 0.3E11 and 0.8E11 (in principle already prepared for LHC MD1 except for the lowest intensity)
MD2901: LHCINDIV with 0.8E11 and 1.8E11
MD3583: 8b4e – taken in the past but saw some blow-up in the vertical plane along the ramp ( 1.6um)
HiRadMat:
Starting on Monday – bunches up to 216 with FT cycle
288 bunch beams foreseen for Wednesday after the dedicated MD from 18:00 – 22:00 – no FT beams
2/17/2019