Switch in ps2 sps tl
Download
1 / 6

Switch in PS2-SPS TL - PowerPoint PPT Presentation


  • 53 Views
  • Uploaded on

Switch in PS2-SPS TL. Aperture defined by 20 GeV beam Starting assumptions (generous): e x / e x = 15 / 8 pi.mm.mrad b max / b min = 50 / 20 m D x = 1.5 m, d p/p = 0.15 % trajectory + mech + survey error = ±6 mm beam size ±5 s

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Switch in PS2-SPS TL' - phuc


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Switch in ps2 sps tl
Switch in PS2-SPS TL

  • Aperture defined by 20 GeV beam

    • Starting assumptions (generous):

      • ex / ex = 15 / 8 pi.mm.mrad

      • bmax / bmin = 50 / 20 m

      • Dx = 1.5 m, dp/p = 0.15 %

      • trajectory + mech + survey error = ±6 mm

      • beam size ±5 s

    • Gives about 30 – 40 mm half-apertures depending on QD/QF

  • Bending angles defined by 50 GeV beam

    • Assume 1.8 T for normal dipole, 1.5 T for ‘specials’

    • Get about 30 mrad for a 3 m long magnet

  • Try to accommodate in 21 m cells

    • About 9 m drift between TL quads

  • Transverse dimensions of TL quads a big issue


Splitter magnets – some interesting challenges

  • - PS East Hall splitter – beams to 24 GeV/c

  • - 1.4 T in gap

  • 30 mm septum width

  • 20 x 1.35 kA turns

  • 500 kW power disspiation !

  • Very special design



  • 3.5 m switch dipole (longer)

  • 2.0 m splitter (shorter)

  • 130 mm H good field region

  • Enough clearance for switched beam

  • 209 mm for TL quad half-size

  • Could fit into present TL (free drift)

  • But….need 1.8 T in large aperture switch magnet – tough!


  • 2.79 m dipoles (standard length)

  • Bipolar switch dipole with 140 mm H good field region

  • Enough clearance for switched beam

  • 330 mm for TL quad half-size

  • But….does not fit into present ‘compact’ TL achromat


  • Bipolar switch dipole + septum looks most promising

    • Need to fit this into the TL lattice – presently does not work

    • Check on feasibility of magnet parameters

  • Some ideas of magnet parameters (physical sizes) needed for TLs – especially quads

    • Might need some special slim types in these places

    • First idea of parameter space could be used now


ad