ILIMA at FAIR Isomers, Lifetimes and Masses at

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Presentation transcript:

ILIMA at FAIR Isomers, Lifetimes and Masses at Phil Walker, spokesperson, U of Surrey Yuri Litvinov, deputy spokesperson, GSI Helmut Weick, project manager, GSI 78 scientists, 20 institutions, 10 countries Isomers, Lifetimes and Masses at Facility for Antiproton and Ion Research GSI, Darmstadt, Germany

FAIR at GSI ESR ILIMA Future facility GSI today Intense beams of RIBs SIS 100/300 SIS 18 ESR ESR Super -FRS Intense beams of RIBs and very exotic nuclides ILIMA RESR CR NESR

Dy-149 in ESR Isomers, Lifetimes and Masses 149Dy in the Experimental Storage Ring Dy-149 in ESR [Yu.A. Litvinov et al., Phys. Lett. B573 (2003) 80] I = 7/2 I = 27/2 Isomers, Lifetimes and Masses [isomers up to I = 43/2 seen in fragmentation Podolyak et al., Phys. Lett. B632 (2006) 203] ESR circumference = 108 m

single-ion in-ring decay [Yu.A. Litvinov et al., Nucl. Phys. A756 (2005) 3]

isomer beam purification Injection length 170 s Injection length 520 s [F. Bosch et al., Int. J. Mass Spec. 251 (2006) 212]

125mCe58+ (t1/2~150s) first “new” isomer in ESR B. Sun et al., 92 keV [C. Petrache et al., Eur. Phys. J. A14 (2002) 439] 125mCe58+ (t1/2~150s) first “new” isomer in ESR B. Sun et al., Eur. Phys. J. A31 (2007) 393

SMS and IMS mass measurements both methods have single-ion sensitivity Schottky Mass Spectrometry (with cooling): T½ > 1 s Isochronous Mass Spectrometry: T½ > 10 μs resolving power ~ 106 accuracy ~ 30 μu, i.e. ~ 30 keV

electron cooling

Schottky method ADC 640 kHz

time-of-flight detectors for isochronous method

isochronous method [L. Chen et al., GSI Annual Report 2005; R. Knöbel et al., AIP Conf. Proc. 891 (2007) 199]

FAIR rings IMPROVEMENTS larger momentum acceptance more Schottky pickups cooled Schottky pickups TOF-detector optimisation => better efficiency => better resolution => shorter half-lives NESR circumference = 222 m

potential for new masses with ILIMA more beam (x1000) more efficiency (x10) more sensitivity potential for new masses with ILIMA

ILIMA working groups Working Groups p.walker@surrey.ac.uk y.litvinov@gsi.de buervenich@fias.uni-frankfurt.de

ILIMA collaboration 78 scientists, 20 institutions, 10 countries GSI, Germany: E. Badura, K. Beckert, F. Bosch, C. Dimopoulou, A. Dolinski, P.Egelhof, B. Franczak, B. Franzke, H. Geissel, F. Herfurth, J. Hoffmann, H.-J. Kluge, R.K. Knöbel, C. Kozhuharov, N. Kurz, S.A. Litvinov, Yu.A. Litvinov, G. Münzenberg, F. Montes, I. Nesmiyan, F. Nickel, F. Nolden, C. Nociforo, W. Ott, W. Quint, C. Scheidenberger, H. Simon, M. Steck, Th. Stöhlker, K. Sümmerer, B. Sun, S. Typel, G.K. Vorobjev, H. Weick, N. Winckler, M. Winkler Gießen, Germany: D. Boutin, L. Chen, T. Dickel, B. Fabian, M. Petrick, W.R. Plaß München, Germany: T. Faestermann, P. Kienle, L. Maier, P. Ring, D. Vretenar Frankfurt,Germany: Th. Bürvenich Mainz, Germany: K. Blaum, K.-L. Kratz, B. Pfeiffer St.Petersburg, Russia: Yu.N. Novikov, D.M. Seliverstov, Yu. Gusev Orsay, France: G. Audi, D. Lunney Bruxelles, Belgium: K. Takahashi Thessaloniki, Greece: G.A. Lalazissis Warsaw, Poland: Z. Janas, M. Pfützner, Z. Patyk Surrey,UK: Z. Podolyak, P.M. Walker Edinburgh, UK: P.J. Woods, Z. Liu Manchester, UK: D.M. Cullen MSU, USA: M. Hausmann, M. Matoš, H. Schatz Los Alamos, USA: D. Madland, P. Moeller, D. Vieira Lanzhou, China: Ruishi Mao, Zhiyu Sun, Guoqing Xiao Niigata, Japan: T. Ohtsubo Saitama, Japan: T. Suzuki, T. Yamaguchi Tsukuba, Japan: A. Ozawa 78 scientists, 20 institutions, 10 countries