Abstract
At the GSI Helmholtzzentrum für Schwerionenforschung (GSI) in Darmstadt, Germany, the HElmholtz LInear Accelerator (HELIAC) is currently under construction. The HELIAC comprises superconducting multigap Crossbar H-mode (SC CH) cavities. The input beam is delivered by an already existing High Charge Injector (HLI). For the further development of the accelerator a detailed knowledge of the input beam parameters to the SC section is necessary. A method for beam reconstruction is incorporated, which provides for longitudinal beam characteristics using measurements with a beam shape monitor and a particle simulation code. This finalizes the investigations on 6D beam parameters, following previous measurements in transversal phase space. The reconstruction of the longitudinal phase portrait is presented.
Highlights
The research for new Super Heavy Elements (SHE) is driven by fusion-evaporation reactions of medium to heavy ions
As the GSI Universal Linear Accelerator (UNILAC) [3,4,5,6,7] is going to be upgraded in order to deliver a high intensity beam to the Facility for Antiproton and Ion Research (FAIR) [6,7] with a short pulse rate, which is opposing to the SHE requirements
A continuous wave (CW) linear accelerator (LINAC) is a essential part of different modern accelerator facilities, as for high energy accelerators for the Spallation Neutron Source (SNS) [14] or medium energy applications in isotope generation, material science and boron-neutron capture therapy [15]
Summary
The research for new Super Heavy Elements (SHE) is driven by fusion-evaporation reactions of medium to heavy ions. As the GSI Universal Linear Accelerator (UNILAC) [3,4,5,6,7] is going to be upgraded in order to deliver a high intensity beam to the Facility for Antiproton and Ion Research (FAIR) [6,7] with a short pulse rate, which is opposing to the SHE requirements. A dedicated continuous wave (CW) heavy ion linear accelerator (LINAC) is proposed at GSI and Helmholtz Institute Mainz (HIM) [8, 9] under key support of Goethe University Frankfurt (IAP) [10, 11] and in collaboration with Moscow Engineering Physics Institute (MEPhI) and Moscow Institute for Theoretical and Experimental Physics (KI-ITEP) [12, 13]. Technological progress in superconducting radio frequency (SRF) technologies [16] through advances in SC CW LINAC development is a strong contribution to the whole cavity accelerator development
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