Monday 27/08 (08:00 - 13:00) - Setting-up of the LHC individual bunch (1 bunch only!) in the SPS (both transverse and longitudinal)

Change of supercycle => LHCMD25.92-55-270_PDOT_V2 (31.2 s long)

Timing sequence Name => LHCMD-coastable-0/1/2

Other equipment modifications for the MD:
- Changed accelerator mode for FT: no extraction 
- NORTH extraction off
- MST/MSE girders retracted
- Servo off
- Switched off TT20 AUXPS

Beam conditions: PSB users = LHCINDIV / PS user = LHCINDIV / SPS user = LHC25NS (RF MMI pointing to LHCMONO => See below how to do this)

RF MMI pointing to LHCMONO (method):

            - Working Sets

            - RF-MMI => SPS-MMI

            - Select context => SPS.USER.LHC25NS

            - View => Show devices description

- MMI target LHCMONO => Enabled and MMI target "previous one" => Disabled. To be done 2 times as it appears 2 times in the list

- Delay has to be set to 550

#injections = 1 (1 bunch) - Extraction from the PS w/o QKE58

N_b = 1.3 x 10¹¹ p/b

Transverse emittances (e^* < 3 mm)

Longitudinal emittance: e_L^* = 0.3 eV.s

• Setting-up of transfer and injection (pre-requisite: verify optics settings)
• Adjust kicker timing
• Inject, establish circulating beam
• Setting-up acceleration, measure tunes and chromaticity and correct
• Check instrumentation: BPMs, BCT, Fast BCT, LHC BPM, Head-tail monitor, Wire Scanner, IPM, Tune meas
• CHECK THE COAST AT 270 GeV/c (was already tried in the past but  not yet successful)

Participants: OP, RF, ABP, BI

Monday 27/08 (13:00 - 15:00) - Check of the RF low-level beam control

Beam conditions: PSB users = LHCINDIV / PS user = LHCINDIV / SPS user = LHC25NS (RF MMI pointing to LHC25NS)

#injections = 1 (1 bunch) - Extraction from the PS w/o QKE58

N_b = 1.3 x 10¹¹ p/b

Transverse emittances (e^* < 3 mm)

Longitudinal emittance: e_L^* = 0.3 eV.s

Coast at 270 GeV/c

Contact person: E. Shaposhnikova

Monday 27/08 (15:00 - 19:00) - Beam stability in double harmonic RF system (LHC upgrade testbed)

Beam conditions: PSB users = LHCINDIV / PS user = LHCINDIV / SPS user = LHC25NS (RF MMI pointing to LHC25NS)

#injections = 1 (1 bunch) - Extraction from the PS w/o QKE58

N_b = 1.3 x 10¹¹ p/b

Transverse emittances (e^* < 3 mm)

Longitudinal emittance: e_L^* = 0.3 eV.s

Coast at 270 GeV/c

Contact person: E. Shaposhnikova

Monday 27/08 (19:00 - 24:00) - BBLR compensation in the SPS

Beam conditions: PSB users = LHCINDIV / PS user = LHCINDIV / SPS user = LHC25NS (RF MMI pointing to LHC25NS)

#injections = 1 (1 bunch) - Extraction from the PS w/o QKE58

N_b = 1.3 x 10¹¹ p/b

Transverse emittances (e^* < 3 mm)

Longitudinal emittance: e_L^* = 0.3 eV.s

Contact person: F. Zimmermann

Tuesday 28/08 (00:00 - 08:00) - Q' measurements for LHC

Beam conditions: PSB users = LHCINDIV / PS user = LHCINDIV / SPS user = LHC25NS (RF MMI pointing to LHC25NS)

#injections = 1 (1 bunch) - Extraction from the PS w/o QKE58

N_b = 1.3 x 10¹¹ p/b

Transverse emittances (e^* < 3 mm)

Longitudinal emittance: e_L^* = 0.3 eV.s

Coast at 270 GeV/c

Contact person: R. Steinhagen

Author: Elias Métral - AB/ABP
Last update: Monday, August 27, 2007 09:28:57 AM
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