"The CRIS beam line at ISOLDE and associated spectroscopy station"
Mustafa Rajabali, KULeuven
(id #139)
Seminar: NoPoster: Yes
Invited talk: No
M. M. Rajabali [1], K.T. Flanagan [2], J. Billowes [2], M.L. Bissell [1], F. Le Blanc [3], B. Cheal [2], D.H. Forest [4], R. Hayano [5], M. Hori [6], T. Kobayashi [5], D. Lunney [7], G. Neyens [1], T. Procter [2], H.H Stroke [8], G. Tungate [4], W. Vanderheijden [1], P. Vingerhoets [1], K. Wendt [9]
[1] Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, Belgium
[2] School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK
[3] I.P.N. Orsay, F-91940 Orsay Cedex, France
[4] School of Physics and Astronomy, The University of Birmingham, Birmingham, B15 2TT, UK
[5]Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bukyo-ku, Tokyo, Japan
[6] Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
[7] Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse - CSNSM
Bâtiments 104 et 108, 91405 Orsay, France
[8] Department of Physics, New York University, New York, NY 10003, USA
[9] Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany
A new experimental station is currently under construction at ISOLDE. It will use the technique of Collinear Resonant Ionization Spectroscopy (CRIS) for the study of very rare isotopes. Additionally, this method is an effective way to remove virtually all isobaric contamination. This is possible due to the high selectivity afforded by resonance ionization spectroscopy, which can even separate nuclear isomeric-states from the ground state. The Ultra-High Vacuum (UHV) condition (10^-10 Torr) enhances the effect of resonance ionization by suppressing collisional ionization of the ions with the residual gas. The installation of the new ion cooler and buncher (ISCOOL) at ISOLDE and the production of bunched ion beams is essential for the CRIS technique. By bunching the ion beam, it is possible to remove any losses associated with the duty cycle of the pulsed lasers. The pure beams will arrive at a spectroscopy station, which consists of a rotating wheel implantation system for alpha and beta decay spectroscopy with high purity Ge detectors around the implantation sight for gamma-ray detection. One of the main challenges in designing such a spectroscopy station is to cater for the UHV conditions. The CRIS beam line and its spectroscopy station will be described in this contribution.
[1] Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, Belgium
[2] School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK
[3] I.P.N. Orsay, F-91940 Orsay Cedex, France
[4] School of Physics and Astronomy, The University of Birmingham, Birmingham, B15 2TT, UK
[5]Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bukyo-ku, Tokyo, Japan
[6] Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
[7] Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse - CSNSM
Bâtiments 104 et 108, 91405 Orsay, France
[8] Department of Physics, New York University, New York, NY 10003, USA
[9] Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany
A new experimental station is currently under construction at ISOLDE. It will use the technique of Collinear Resonant Ionization Spectroscopy (CRIS) for the study of very rare isotopes. Additionally, this method is an effective way to remove virtually all isobaric contamination. This is possible due to the high selectivity afforded by resonance ionization spectroscopy, which can even separate nuclear isomeric-states from the ground state. The Ultra-High Vacuum (UHV) condition (10^-10 Torr) enhances the effect of resonance ionization by suppressing collisional ionization of the ions with the residual gas. The installation of the new ion cooler and buncher (ISCOOL) at ISOLDE and the production of bunched ion beams is essential for the CRIS technique. By bunching the ion beam, it is possible to remove any losses associated with the duty cycle of the pulsed lasers. The pure beams will arrive at a spectroscopy station, which consists of a rotating wheel implantation system for alpha and beta decay spectroscopy with high purity Ge detectors around the implantation sight for gamma-ray detection. One of the main challenges in designing such a spectroscopy station is to cater for the UHV conditions. The CRIS beam line and its spectroscopy station will be described in this contribution.
