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Optical parameters of dipoles for the DAFNE upgrade

Optical parameters of dipoles for the DAFNE upgrade. M. Preger 6/11/2007. References. B. Bolli, N. Ganlin, F. Iungo, F. Losciale, M. Modena, M. Paris, M. Preger, C. Sanelli, F. Sardone, F. Sgamma, M. Troiani: "The 'Short' Dipoles of the DAFNE Main Ring Achromats" , MM-19, 2/8/1996

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Optical parameters of dipoles for the DAFNE upgrade

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  1. Optical parameters of dipolesfor the DAFNE upgrade M. Preger 6/11/2007

  2. References • B. Bolli, N. Ganlin, F. Iungo, F. Losciale, M. Modena, M. Paris, M. Preger, C. Sanelli, F. Sardone, F. Sgamma, M. Troiani: "The 'Short' Dipoles of the DAFNE Main Ring Achromats", MM-19, 2/8/1996 • B. Bolli, N. Ganlin, F. Iungo, F. Losciale, M. Paris, M. Preger, C. Sanelli, F. Sardone, F. Sgamma, M. Troiani: "The'Long' Dipoles of the DAFNE Main Rings Achromats", MM-25, 21/5/1997 • B. Bolli, N. Ganlin, F. Iungo, F. Losciale, M. Paris, M. Preger, C. Sanelli, F. Sardone, F. Sgamma, M. Troiani: "The Dipoles of the DAFNE Main Rings Achromats", MM-26, 22/5/1997

  3. Field measurements taken along the ideal beam line (two straight sections and one arc of circle with the nominal bending radius) and along lines parallel to the ideal one • Original results (References) taken by interpolating with a second order polynomial between 0, -1cm, +1cm • Present results, because of bending angle and bending radius modification in sector magnets adjacent to the interaction regions, interpolated between 0, -2cm, +2cm • Tracked transfer matrix obtained by difference between ideal particle (x=0, x’=0, ∆p/p=0) and particles with +1mm, +1mrad, ∆p/p=0.001 • Tracked matrix fitted by optical model of two straight sections with a sector dipole in between with nominal length and bending radius, with entrance and exit angles left as free parameters

  4. Sector long dipoles (old)

  5. Sector short dipoles (old)

  6. Parallel long dipoles

  7. Parallel short dipoles

  8. Sector long dipoles (new)

  9. Sector short dipoles (new)

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