Measurement of the six Dimensional Phase Space at the New GSI High Current Linac

Abstract

For the characterization of the 10 mA ion beam delivered by the new High Current Linac at GSI, sophisticated, mainly non-intersepting diagnostic devices were developed. Besides the general set-up of a versatile test bench, we discuss in particular bunch shape and emittance measurements. A direct time-of-flight technique with a diamond particle detector is used to observe the micro-bunch distribution with a resolution of $\sim 25 $ ps equals 0.3$^{o}$ in phase. For the determination of the energy spread a coincidence technique is applied, using secondary electrons emitted by the ion passing through an aluminum foil 80 cm upstream of the diamond detector. The transverse emittance is measured within one macro pulse with a pepper-pot system equipped with a high performance CCD camera.