Machine
The CLS is a 2.9 GeV storage ring with a 12 cell double bend achromat lattice. There are 12 straight sections of equal length. There are two bend magnets per cell and each one is a combined function magnet. One of the main features of a synchrotron storage ring are the number of straight sections, their parameters, and how they are used.
Storage Ring Parameters
| Lattice Type: | Double Bend Achromat |
| Beam Energy: | 2.9 GeV |
| Periodicity: | 12 cell |
| Circumference: | 170.88 m |
| Beam current: | 220 mA |
| Momentum Compaction: | 0.0038 |
| Straight Length: | 5.2 m |
| Straight βx βy, ηx: | 8.5m, 4.6m, 0.15m |
| Cavity Frequency: | 500 MHz |
| Cavity Voltage: | 2.4 MV |
| Harmonic number: | 285 |
| Horizontal emittance (εx): | 18.1 nm-radian |
| Energy spread (ΔE/E): | 0.00111 |
| Bunch Length: | 10 mm |
The upstream accelerator complex is a 220 keV DC thermionic RF source. A six section LINAC increases the beam energy from 220 keV to 250 MeV. An energy compression system (3 magnet chicane and RF cavity) compresses the relative beam energy spread by a factor of 10. The beam is then transported into a booster ring and ramped from 250 MeV to 2.9 GeV.
Straight Section Usage
| Straight Number | Device(s) | Parameters |
| 1 | Injection straight | 4 kicker bump |
| 2 | Electron beam diagnostic straight | - |
| 3 | Reserved for future use | - |
| 4 | Chicaned: In-vacuum undulator In-vacuum wiggler | l=20 mm, L=1.582 m, Beff =1.049 T l=80 mm, L=1.28 m, Bpeak =1.948 T |
| 5 | Superconducting wiggler | l=48 mm, L=0.624 m, Bpeak =4.3 T |
| 6 | Superconducting wiggler | l=33 mm, L=1.056 m, Bpeak = 2.2 T |
| 7 | Chicaned: In-vacuum undulator Out-vacuum wiggler | l=18.6 mm, L=1.582 m, Beff =1.016 T l=150 mm, L=1.638 m, Beff =2.103 T |
| 8 | In-vacuum undulator | l=20 mm, L=1.583 m, Beff =0.959 T |
| 9 | Single length dual period APPLE-II undulator | l=180 mm, L=3.834 m, Beff =0.697 T l=55 mm, L=3.924 m, Beff =0.877 T |
| 10 | Chicaned APPLE-II undulators | l=75 mm, L=1.591 m, Beff =0 742 T l=75 mm, L=1.591 m, Beff =0.742 T |
| 11 | Chicaned APPLE-II undulators | l=45 mm, L=1.189 m, Beff =0.843 T l=185 mm, L=1.635 m, Beff =0.751 T |
| 12 | RF Cavity | - |