SLS Storage Ring Optics

D1

Comment

A distributed dispersion optics had been developed early for further reduction of emittance on the expense of nonzero dispersion in undulators and cavities. It was tested only once at Feb.28,2001 and worked quite well, but was never used again.

Data

Circumference [m]	288.000
Working Point Qx / Qy	19.23 / 7.56
Natural chromaticities	-56.1 / -17.8
Corrected chromaticities	+1 / +1
Momentum compaction factor	6.42E-4
Horizontal emittance at 2.4 GeV [nm rad]	3.85
Effective emittance in S / M / L straight [nm rad]	4.13 / 4.10 / 4.02
rms relative energy spread at 2.4 GeV	8.58E-4
Energy loss per turn (no IDs) [keV]	512
Short straight: Beta_x / Beta_y / Disp [m]	2.01 / 2.40 / 0.04
Medium straight: Beta_x / Beta_y / Disp [m]	3.52 / 4.00 / 0.05
Long straight: Beta_x / Beta_y / Disp [m]	13.7 / 6.50 / 0.08
Maximum values: Beta_x / Beta_y / Disp [m]	20.5 / 20.0 / 0.31

Additional Material

Lattice file for OPA

Snap file for upload to control system