SMuK 2023 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 15: Instrumentation VI
HK 15.1: Talk
Tuesday, March 21, 2023, 17:00–17:15, SCH/A117
Decelerating Antiprotons from 100keV to 4keV — •Jonas Fischer for the PUMA collaboration — IKP TU Darmstadt
The PUMA collaboration aims at trapping, storing and transporting 109 antiprotons in a cryogenic penning trap to perform experiments with radioactive nuclei and investigate the nuclear density at the outermost part of the nucleus itself. To achieve this, antiprotons delivered from the ELENA storage ring at CERN need to be decelerated from 100keV to 4keV in a first step to be able to capture them in the penning trap [1].
To minimise losses in the deceleration process, a Pulsed Drift Tube (PDT) was installed at a beam line connected to the ELENA storage ring (LNE51) at CERN. A vacuum of below 10−10 mbar is necessary to avoid the annihilations of the antiprotons with the residual gas. This, and the required high voltage of about 100 kV, impose strict restrains on the design and operation of the pulsed drift tube. In this talk I will introduce the current setup and its mayor design considerations. Furthermore, the first successful tests of the setup with antiprotons will be presented.
[1] Aumann, T., Bartmann, W., Boine-Frankenheim, O. et al. PUMA, antiProton unstable matter annihilation. Eur. Phys. J. A 58, 88 (2022). https://doi.org/10.1140/epja/s10050-022-00713-x