Cryogenic keV ion-beam storage in ConeTrap - a tool for ion-temperature control
2010 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, Vol. 621, no 1-3, 83-90 p.Article in journal (Refereed) Published
We have tested the ion-storage capabilities of the compact triple-electrode electrostatic ion-beam trap, ConeTrap, down to cryogenic temperatures. The low-temperature operation of this electrostatic storage device is an important test for the double electrostatic ion-ring experiment, DESIREE, which is presently under construction at Stockholm University. In the present work we measured the pressure dependent storage lifetimes of 2.5 keV He+ and 2.8 keV Ar+ ion beams in ConeTrap at temperatures down to 28 K and pressures down to 1.3·10-10 mbar. The so far longest measured ion storage lifetime using this system is 21.5±3.8 s for Ar+ ions. The present combination of ConeTrap and the cryogenic experimental chamber was recently applied in the first black-body correction-free measurement of the lifetime of the metastable He- ion at 10 K [Phys. Rev. Lett. 103, 213002(2009)].
Place, publisher, year, edition, pages
Elsevier B.V. , 2010. Vol. 621, no 1-3, 83-90 p.
Electrostatic ion-beam storage
Research subject Physics
IdentifiersURN: urn:nbn:se:su:diva-32645DOI: 10.1016/j.nima.2010.06.008OAI: oai:DiVA.org:su-32645DiVA: diva2:281227