- Change of SPS supercycle: LHC-FT500_PDOT_V1 => It is the nominal LHC cycle: 450 GeV/c, 18 BP = 21.6 s (i.e. the same as the one already used in the last Injector Long MD of week 28)
- Only 1 SPS cycle this time in the supercycle (and not 2 as it was the case during week 28 to allow the PS to have more cycles for its users)!
- SPS user = LHC1
- Timing sequence in the CBCM = LHC1-0/1/3(1)
Pre-requisites:
- The interlock threshold on the temperature of the MKE kickers should be ~ 90º C (it should be ~ 70º C when there are extractions) => No need to call Etienne Carlier anymore as it is done in SIS
- During (the scrubbing run and) the LONG MDs with LHC beam the ZS are RETRACTED / HV to 0 kV / ION TRAPS ON (inform the ZS expert). The cooling circuit for the septa magnets (circuits 214, 414 and 614) should be switched OFF (by TI). Block the fast vacuum valves OUT in the injection and extraction areas (LSS1, LSS2, LSS6) => Giovanna Vandoni (AT/VAC, 163269) will take care of this (also after the MD to come back to the initial situation)
- The 2 (dipole) magnets which are used to
create a magnetic field in the ecloud monitors are: MDHW5183 with 25 A and
MDPH51753 with 28.5 A. These values correspond to a field of 0.12 T.
- Tuesday 12/08 (05:00 - 20:00) - Setting-up of the nominal (4 times 72 bunches) 25 ns LHC beam in the SPS (both transverse and longitudinal) until 450 GeV/c (OP, RF and ABP)
- Tuesday 12/08 (20:00 - 02:00) - Achieving nominal longitudinal parameters at 450 GeV/c in the SPS + LHC beam at different intensities with constant longitudinal parameters in the SPS + Study of controlled emittance blow-up, reproducibility issue and dependence on 800 MHz settings = Continuation of what was started in week 28 (T. Bohl + J. Tuckmantel)
- Wednesday 13/08 (02:00 - 10:00) - e- cloud (build-up & instability) studies in the SPS = Continuation of what was started in week 28 (W.Hofle-E.Mahner-G.Rumolo)
- Wednesday 13/08 (10:00 - 14:00) - Access to install a matching monitor camera in BA5 (Thibaut Lefevre) + InCA (S. Deghaye)
- Wednesday 13/08 (14:00 - 19:00) - Matching monitor in the SPS (E. Benedetto)
- Wednesday 13/08 (19:00 - 20:00) - Access to remove the matching monitor camera in BA5 (Thibaut Lefevre)
- Wednesday 13/08 (20:00 - 21:00) - BQK calibration (R. Steinhagen)
- Wednesday 13/08 (21:00) to Thursday 14/08 (07:00) - PS-SPS transfer (capture/flat-bottom losses) + check LHC beams with 50/75 ns bunch spacings in the SPS (H. Damerau and T. Bohl)
- Thursday 14/08 (07:00
- 08:00) -
Recovery from MD (OP)
Author: Elias Métral - AB/ABP
Last update:
Tuesday, August 12, 2008 08:06:10 PM
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