Speaker
Description
Heavy, highly charged ions stored at low energy are ideal probes for various questions of modern physics that range from tests of QED, especially at high fields, to detailed investigations of nuclear reactions. CRYRING@ESR is a low energy storage ring transferred from Stockholm, Sweden, to Darmstadt in order to profit from the exceptional production capabilities of exotic ions at GSI, Darmstadt, Germany. Within the FAIR Phase 0 experiment program, CRYRING@ESR provides heavy, highly charged ions, as for instance U91+, to experiments. Additionally, a local injector has been used for commissioning and provides light, medium-charged ions.
CRYRING@ESR stores ions ranging from a few 100 keV/nucleon to a few MeV/nucleon. It is also equipped with one of the most elaborate electron coolers, especially suited to low energy. Such, the ions produced using the GSI accelerator chain can be decelerated, cooled, and - if needed - extracted. Taken into operation after the move from Stockholm and some serious refurbishment in 2018, it has been running routinely within the FAIR phase 0 program since 2020.
Experiments rely on the exceptional vacuum and a multitude of additional detectors and interaction regions. One region is dedicated to laser-ion beam interaction, while the other is equipped with a gas jet target and a transversal electron target. In combination with modern detectors like micro-calorimeters for X-rays or the CARME silicon strip array for particles produced in nuclear reactions, unique measurements at astrophysical relevant energies and systems have been performed already and are still ongoing.
In this contribution we will discuss the technical possibilities and limitations, the ion beams available from the GSI accelerator chain or the local injector, and its properties focussing particularly on the opportunities for experiments.
| Email address | f.herfurth@gsi.de |
|---|---|
| Classification | Storage rings |
