SLS Storage Ring Optics

D2R

one sixth of the lattice

Comment

This optics and its very similar successor D2R55 was the standard for a long time: it started already in 2001 as the first real user optics after several temporary commissioning optics, and ended early 2004, when moving to the femto optics F40 and F4T.

Data

Circumference [m]	288.000
Working Point Qx / Qy	20.38 / 8.16
Natural chromaticities	-65.9 / -20.8
Corrected chromaticities	+1 / +1
Momentum compaction factor	6.66E-4
Horizontal emittance at 2.4 GeV [nm rad]	5.03
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]	1.42 / 0.92 / 0.00
Medium straight: Beta_x / Beta_y / Disp [m]	2.36 / 2.74 / 0.00
Long straight: Beta_x / Beta_y / Disp [m]	4.56 / 3.73 / 0.00
Maximum values: Beta_x / Beta_y / Disp [m]	22.8 / 23.5 / 0.35

Additional Material

Lattice file for OPA

Snap file for upload to control system