The buffer-gas cell and the extraction RFQ for SHIPTRAP

SHIPTRAP is a new ion trap system for high-precision mass
measurements of transuranium recoil-ions from the SHIP facility at
GSI. The system consists of a buffer-gas cell to thermalise the
incoming ions, an extraction system to separate the ions from the
buffer gas, an RFQ buncher to cool and accumulate the ions and a
tandem Penning-trap system for isobaric purification and
high-precision mass measurements. The buffer-gas cell and the
extraction RFQ were developed, assembled and tested within this
thesis at the MLL in Garching and at the GSI.