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TY - UNPB AU - von Hahn, R. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - The Interstellar Space in an Electrostatic Cryogenic Storage Ring J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - Traditionally, particle accelerators have been built to provide increasingly high energies and intensities to reproduce the very first moments of our Universe after the Big Bang to investigate for example the formation of the building blocks of matter. In the last decade, however, the interest also focuses on the formation and dynamics of molecules in the early and today’s Universe, which places completely different demands on particle accelerators. High energies are not needed. Instead, they have to provide near to interstellar conditions such as an ultrahigh vacuum of or less than 1E-14 mbar and cryogenically cooled environments for the stored particles. This allows extremely long observation periods to investigate quantum state properties and opens up completely new insights in different fields of physics. The electrostatic cryogenic storage ring CSR at the Max Planck Institute for Nuclear Physics in Heidelberg was conceived, designed and constructed to achieve these goals and is successfully in operation since 2015. This talk will sum up motivation, design, construction and first results obtained with the CSR, a worldwide unique machine with great new opportunities. PB - JACoW Publishing CP - Geneva, Switzerland ER -