Week 28 - Injector Long MD Monday 07/07 08:00 to Thursday 10/07 08:00

Change of SPS supercycle: LHC-FT500_PDOT_V1

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.
 

- Monday 07/07 (08:00 - 16:00) - 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)

- Monday 07/07 (16:00 - 24:00) - Achieving nominal longitudinal parameters at 450 GeV/c in the SPS (T. Bohl)

- Tuesday 08/07 (00:00 - 08:00) - e- cloud (build-up & instability) studies in the SPS (W.Hofle-E.Mahner-G.Rumolo)

- Tuesday 08/07 (08:00 - 16:00) - Rephasing of the LHC beam at flat top in the SPS (P. Baudrenghien)

- Tuesday 08/07 (16:00 - 24:00) - LHC beam at different intensities with constant longitudinal parameters in the SPS (T. Bohl)

- Wednesday 09/07 (00:00 - 04:00) - LHC BLM signal at the LHC collimator in the SPS (Till Bohlen)

- Wednesday 09/07 (04:00 - 08:00) - Test with the radial loop PU in the PS* (S. Aumon)

- Wednesday 09/07 (08:00 - 12:00) - 4-ppm power supplies in the PSB injection line (K. Hanke)

- Wednesday 09/07 (12:00 - 20:00) - Study of controlled emittance blow-up, reproducibility issue and dependence on 800 MHz settings (J. Tuckmantel)

- Wednesday 09/07 (20:00) to Thursday 10/07 (04:00) - Long LHC cycle in the PS (R. Steerenberg)

- Thursday 10/07 (04:00 - 08:00) - Recovery from MD (OP)

* If possible (CODD needed!). If not, 2 possibilities (to be confirmed):

1) Other work will be performed in the PS during the same slot (S. Gilardoni)

2) Till could continue until 06:00 and Klaus could start at 06:00


Author: Elias Métral - AB/ABP
Last update: Wednesday, January 07, 2009 10:04:13 PM
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