2022-10-10: GSI FRS-Ion-Catcher - First extraction of fission fragments using INCREASE setup with short DC cage

INCREASE (in-cell reaction system) setup with the short DC cage was used for the first time to extract fission fragments by the spontaneous fission of Cf-252. The source is installed inside the Cryogenic Stopping Cell (CSC), which sends the ions further to MR-TOF-MS at the FRS Ion Catcher facility at GSI Darmstadt. The modified form of the DC cade first electrode, INCREASE, consists of a target wheel, a beam dump, and a space charge suppression system; and the shorter length of the DC cage enables the faster extraction of ions stopped inside the CSC. Along with the magnificent resolving power (~1,000,000), mass accuracies down to a few 1E-8, and high background suppression by the MR-TOF-MS, the whole system is capable of measuring highly energetic fission fragments with very short half-lives. The image below shows the spectrum of Cf-252 fission fragments extracted using an INCREASE setup with a short DC cage for the first time.