Week 27 - SPS Dedicated MD

 

Wednesday 04/07  (08:00-10:00)

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)

Change of supercycle (LHC-FT500_PDOT_V1 - User=LHC25) and HW compensation trim

Beam conditions: No beam

Participants: AB/OP - AB/RF - AB/ABP

 

Wednesday 04/07  (10:00-14:00)

Setting-up of the cycle with LHC beam (12 bunches)

SPS user: LHC25 - PS USER=LHC25

#batches = 1 (12 bunches)  - Extraction w/o QKE58 from PS

Nb = 1.3 x 1011 p/b

Transverse emittances (e* < 3 mm)

Longitudinal emittance: eL* = 0.35 eV.s

Participants: AB/OP - AB/RF - AB/ABP - AB/BI

 

Wednesday 04/07 (14:00-20:00)

Setting-up of 800 MHz, RF feedback and feedforward and longitudinal damper

Transverse fine tuning in parallel

SPS user: LHC25 - PS USER=LHC25

#batches = 1-4 (72 bunches)  - Extraction w/o QKE58 from PS

Nb = 1.3 x 1011 p/b

Transverse emittances (e* < 3 mm)

Longitudinal emittance: eL* = 0.35 eV.s

Participants: AB/OP - AB/RF - AB/ABP - AB/BI

 

Wednesday 04/07 (20:00-21:00)

Transverse damper set-up

SPS user: LHC25 - PS USER=LHC25

#batches = 1-4 (72 bunches) - Extraction w/o QKE58

Nb = 1.3 x 1011 p/b

Transverse emittances (e* < 3 mm)

Longitudinal emittance: eL* = 0.35 eV.s

Participants: AB/OP - AB/RF - AB/ABP

 

Wednesday 04/07  (21:00-22:00)

Setting-up of the cycle with Pilot beam

SPS user: LHC25 - RF MMI pointing to LHC PILOT - PS USER=LHCPILOT

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

Nb = 5 x 109 p/b

Transverse emittances (e* = 3 mm)

Longitudinal emittance: eL* = 0.3 eV.s

Participants: AB/OP - AB/RF - AB/ABP - AB/BI

 

Wednesday 04/07  (22:00)- Thursday 05/07 (04:00)

Non-linear chromaticity measurements all along the cycle

SPS user: LHC25 - RF MMI pointing to LHC PILOT - PS USER=LHCPILOT

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

Nb = 5 x 109 p/b

Transverse emittances (e* = 3 mm)

Longitudinal emittance: eL* = 0.3 eV.s

Participants: AB/OP - AB/ABP - AB/BI

Contact person: R. Tomas

 

Thursday 05/07 (04:00-06:00)

Creation of references for the Pilot beam

SPS user: LHC25 - RF MMI pointing to LHC PILOT - PS USER=LHCPILOT

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

Nb = 5 x 109 p/b

Transverse emittances (e* = 3 mm)

Longitudinal emittance: eL* = 0.3 eV.s

Participants: AB/OP

 

Thursday 05/07 (04:00-06:00)

Creation of references for the LHC nominal beam

SPS user: LHC25 - RF MMI pointing to LHC25 - PS USER=LHC25

#batches = 1-4 (72 bunches) - Extraction w/o QKE58

Nb = 1.3 x 1011 p/b

Transverse emittances (e* < 3 mm)

Longitudinal emittance: eL* = 0.35 eV.s

Participants: AB/OP

 

Thursday 05/07 (08:00)

End of MD

 

Unblock the vacuum valves in the injection and extraction areas

Ask TI to restart the cooling circuit for the septa magnets (circuits 214, 414 and 614)

Inform the ZS expert to check the conditioning of the septa before set the HV

 

 


Author: Gianluigi Arduini - AB/ABP
Last update: Tuesday, July 03, 2007 12:04:14 PM
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