Orbit Correction and Steering

Activities :

• Orbit and dispersion correction algorithms.

• Online DFS (Dispersion Free Steering) application. 
      Click here for more information on this software package.

• Real-time Feedbacks for the LHC.

Documents :

• LEIR orbit system acq spec. , functional spec. , interface spec. , guru spec.

Applications :

• YASP offline web start.

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Publications, Notes & Talks ...

General :

• Dispersion and crossing angles at the LEP IPs in 1993/1994

• Dispersion Free Steering at LEP (Phys. Rev pdf,
  direct link to Phys. Rev. ST Accel. Beams 3, 121001 (2000))

• Beam-beam deflection scans for luminosity optimization (ps)

• Closed orbits at LEP as test ground for LHC (ps)

• Low-beta quadrupole movements at LEP (PAC97) (pdf,ps)

• K-modulation offset measurements on LEP (EPAC98)

LHC Threading :

• Experience with threading at LEP - why HG's threader does not work - LCC 2002.
• LHC threading - LTC June05.

Ground Motion :

• LEP ground motion - 1993 measurements.
• LEP alignment analysis (R. Pithan) : CERN Report / SLAC WS.
• Ground motion expectations for CNGS target (CNGS Comm. Com., Sept 2005).
• Analysis of Ground Motion at SPS and LEP - Implications for the LHC, CERN-AB-2005-087.

Figures :

• EPS figures of LEP hor & vert orbits, vert. orbit and correctors and vert. bare orbit.
• EPS figure of a LEP horizontal sawtooth orbit.

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