Author/Authors :
Reinhed، نويسنده , , P. and Orbلn، نويسنده , , A. and Rosén، نويسنده , , S. and Thomas، نويسنده , , R.D. and Kashperka، نويسنده , , I. and Johansson، نويسنده , , H.A.B. and Misra، نويسنده , , D. and Fardi، نويسنده , , A. and Brنnnholm، نويسنده , , L. and Bjِrkhage، نويسنده , , M. and Cederquist، نويسنده , , H. and Schmidt، نويسنده , , H.T.، نويسنده ,
Abstract :
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 [1].
