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List of Issues for Beam runing in ATF EXT and ATF2

1.Optics and layout 1.1 Finalization geometry Confirmation of common Q strength with DR and finalization of layout and optics ( Alignment group requires final version ) 1.2 Optimization of SX strength and skew position in EXT  EXT tuning 2. EXT tuning

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List of Issues for Beam runing in ATF EXT and ATF2

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  1. 1.Optics and layout 1.1 Finalization geometry Confirmation of common Q strength with DR and finalization of layout and optics ( Alignment group requires final version ) 1.2 Optimization of SX strength and skew position in EXT  EXT tuning 2. EXT tuning 2.1 Dispersion correction 2.2 Coupling correction  need new skew? 3. FF tuning 3.1 BBA 3.2 Beam size tuning Traditional method, R-matrix method,…. List of Issues for Beam runing in ATF EXT and ATF2

  2. ReL3 N=2 ImL3 Pole Face Modification of Q Scaling C6real=C6C2real r02 r0-6, B6(5)=6!C6real, B6= B6(5) r 5/5! B6/B2= B6(5) r 5/5!/(2C2real r)= 3 C6real r 4/C2real = 3 C6C2realr0-4 r 4/C2real = 3 C6 (r/r0)4 <12 a (r/r0)4 =12 (areal/ r02 ) (r/r0)4 =12 areal r 4 / r06 (a is also scaled ) If r=10mm, bore radius r0 =25mm and we need B6/B2<1e-4, then areal <2e-7m2 . When the area is square, the dip height and width must be less than 4.5e-4 m. ?? Where a=h Dz 2 S/(a N) N=2 N f 2 S/(a N) has its max of 1 at N f=0, and monotonically decreasing with larger N f.

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