SPS
Updated 2014
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There are 4 types of optics - all called from general/madx :
ft_noqs.str:
1) the CNGS beam at injection (14 GeV/c)
2) the CNGS beam during the ramp
3) the CNGS beam at extraction (400 GeV/c)
4) but it is also used for the fixed target beam at injection
5) and for the fixed target beam during the ramp
ft_noqs_ext.str:
Could be used soon for slow extraction w/o q-split.
M. Gyr is calculating the strength of the extraction sextupoles.
ft_qs_ext.str:
SPS Shared slow extraction north (west extraction does not exist any more)
ft_qs_ext.str is presently used for the fixed target
slow extraction at top energy (400 GeV/c)
lhc_newwp.str:
1) at injection (26 GeV/c, not 14)
2) during the ramp
3) and at extraction (450 GeV/c)
SPS_Q20.str:
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Further information:
http://cern-accelerators-optics.web.cern.ch/cern-accelerators-optics/SPS/SPS.htm
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Excecute a madx job in directory madx:
>madx < ft_noqs.madx
>madx < ft_noqs_ext.madx
>madx < ft_qs_ext.madx
>madx < lhc_newwp.madx
or, for special tasks:
>madx < general.madx
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Two MADX jobs added for the beam dump system in LSS1 in the SPS.
The reason is that the quadrupoles 11710/11810/11910
are displaced deliberately to form a closed orbit bump both in x and y.
The two MADX jobs are made by Alex Koschik and Thomas Kramer:
/cmd/lss1_q171819_displacement.madx
/cmd/lss1_q171819_rematchbumpclosure.madx
The alignments are also extracted and placed in:
/alignments/lss1_q171819_displacement.align O.B. 20/2/2007
The file: /cmd/lss1_q171819_rematchbumpclosure.madx was removed.
Possibly a different strategy should be found, than to correct
the orbit by tuning the quadrupoles G.A. O.B. 22/2/2007
Corrected SPS skew quadrupoles. Changed K1 to K1S for LQSA in /strength/elements.str.
Thanks to Ilya Agapov for finding this. O.B. 10/10/2007
Modifications during the 2007-2008 shutdown implemented O.B. 28/4/2008
New sequence and element files in the 2008-2009 shutdown.
New aperture files being prepared by S.Chemli. O.B. 6/5/2009
New sequence and element files for 2010.
From layoutdatabase P.Leroux/S.Chemli/R.Billen. O.B. 27/9/2010
SPS_Q20.str introduced by Y.Papaphilippou and H.Bartosik O.B. 10/3/2011
New sequence and element files for 2011 from layoutdatabase.
SPS collimator was missing. Thanks to Francesca Galluccio for finding this. O.B. 29/6/2011
New SPS files O.B. 23/6/2014
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