
3 High Power Microwave Applications 85
building a coherent light source using the cold technology.
74
The sources required for the cold
method are not high power, in contrast to the ~100-MW klystrons of the hot method. The candidates
are ~10-MW, 1-μs multibeam klystrons.
The Compact Linear Collider (CLIC) aims at a center-of-mass energy range for electron– positron
collisions of 0.5–5TeV, optimized for a nominal center-of-mass energy of 3TeV. To keep the length
reasonable, the accelerating gradient has to be very high—CLIC aims at an acceleration gradient
of 100MV/m. Superconducting technology being fundamentally limited to lower gradien