Optics of the Amsterdam Pulse Stretcher (AmPS)

The AmPS machine has been designed as a dual-purpose machine: it will be used as a pulse stretcher (PS) and as a storage ring for electrons. In the latter mode, the stored beam will be used in conjunction with an internal (jet) target. Since the internal target will limit the lifetime of the beam to minutes, the storage requirements (e.g. vacuum) will be modest. In PS mode, the energy range is 250-800 MeV; in storage mode the range is extended to 900 MeV. It is anticipated to store a current of up to 200 mA.<>