1 / 6

NML Cryomodule Quad Doublet Lattice Solutions

NML Cryomodule Quad Doublet Lattice Solutions. Question Are quadrupoles required as part of the cryomodule package? Assumptions 29E-6 normalized emittance (blowup by CSR in chicane) Injector kinetic energy = 46 MeV

akio
Télécharger la présentation

NML Cryomodule Quad Doublet Lattice Solutions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NML Cryomodule Quad Doublet Lattice Solutions • Question • Are quadrupoles required as part of the cryomodule package? • Assumptions • 29E-6 normalized emittance (blowup by CSR in chicane) • Injector kinetic energy = 46 MeV • 6 cryomodules: 1st = TTF no quads; 2nd = TTF with quad doublet; 3rd – 6th = ILC with quad doublet • TTF-like quad doublets: 20 T/m, L=0.15 m • Physical aperture = ±17.5mm • Applied condition • Require minimum aperture of ±8 beam sigmas through cryomodules Cryomodule Quad Doublet Solutions – M Church 9/12/07

  2. Allowed Initial Lattice Parameters: 31 MV/m, no quads For initial lattice parameters outside this region, the beam size violates the aperture requirement somewhere within the 6 cryomodules. Cryomodule Quad Doublet Solutions – M Church 9/12/07

  3. Quad Doublet Solution: 31 MV/m CM2 quads: 6.8 T/m CM3 quads: 3.1 T/m CM4 quads: 4.3 T/m CM5 quads: 5.9 T/m CM6 quads: 7.6 T/m Cryomodule Quad Doublet Solutions – M Church 9/12/07

  4. Allowed Initial Lattice Parameters: 16 MV/m, no quads For initial lattice parameters outside this region, the beam size violates the aperture requirement somewhere within the 6 cryomodules. Cryomodule Quad Doublet Solutions – M Church 9/12/07

  5. Quad Doublet Solution: 16 MV/m CM2 quads: 1.3 T/m CM3 quads: 1.2 T/m CM4 quads: 1.8 T/m CM5 quads: 2.4 T/m CM6 quads: 3.2 T/m Cryomodule Quad Doublet Solutions – M Church 9/12/07

  6. Summary • Quadrupole doublets are required in most of the cryomodules to compensate RF focusing • Quadrupole focusing strength of 20 T/m x .15 m is adequate; half that is probably adequate • Initial lattice functions at entrance of 1st cryomodule is a constraint on injector design Cryomodule Quad Doublet Solutions – M Church 9/12/07

More Related