Canadian Light Source Update

The Canadian Light Source (CLS) storage ring has been operating routinely since commissioning was completed in the spring of 2004. Beam currents up to 230 mA have been achieved with the single superconducting RF cavity. With steady improvement beam lifetimes (1/e) of 14 hours at 200 mA and 0.5% coupling are now possible. In the last year the vertical tune was increased by 1 integer to produce a smaller vertical beam size in the insertion device (ID) straight sections. This year the horizontal tune will be increased to reduce the beam emittance. The vertical coupling has been reduced both globally and locally using a skew quadrupole response technique. A wide range of photon energies are provided by an initial complement of five IDs and two infrared (IR) ports. The 5 m straights have room for two IDs. The light cones from these IDs are separated by about 1.5 mrad by “chicaning” the electron beam in the straights. To date two IDs have been installed in one straight using the chicaning technique. As well, a superconducting wiggler, an in-vacuum undulator and an AppleII type elliptically polarizing undulator (EPU) have been installed and are being commissioned.