ABSTRACT
This chapter describes the methods and techniques for creating short bunches of charged particles and also short laser pulses. It discusses various topics of beam stability and ways to enhance the intensity of both the particle beams and the laser pulses. The chapter reviews some effects that may prevent the formation of ultra-short bunches is notably coherent synchrotron radiation. Some compression of the beam may be performed in the photo injector, via the technique of velocity bunching. The methods of generating short laser pulses often rely on so-called Q-switching techniques. The chapter explains mechanism of how BNS damping mitigates single-bunch beam break-up. It presents an overview of phase space manipulation and cooling methods, as well as local disturbance correction methods, aiming to connect these and other techniques to Accelerating Science TRIZ. The chapter also discusses round-to-flat or flat-to-round beam transformation, suggested by Y. Derbenev.
