Popis: |
The Diamond storage ring has been operated in low-alpha mode providing short-pulse radiation for pumpprobe experiments and coherent radiation for THz/IR measurements. Two lattices have been implemented, with both capable of providing a variable alpha in the range ±2×10-5, down to minimum values well below 1×10-6. The second lattice additionally provides a low emittance of 4nm.rad, compared to 35nm.rad for the first lattice. An overview of operation in low-alpha mode is given, along with first measurements of coherent emission at long wavelengths under a variety of conditions. |