The FRS Ion Catcher - A facility for high-precision experiments with stopped projectile and fission fragments

被引:92
作者
Plass, W. R. [1 ,2 ]
Dickel, T. [1 ,2 ]
Purushothaman, S. [2 ]
Dendooven, P. [3 ]
Geissel, H. [1 ,2 ]
Ebert, J. [1 ]
Haettner, E. [1 ,2 ]
Jesch, C. [1 ]
Ranjan, M. [3 ]
Reiter, M. P. [1 ]
Weick, H. [2 ]
Amjad, F. [2 ]
Ayet, S. [2 ]
Diwisch, M. [1 ]
Estrade, A. [2 ]
Farinon, F. [2 ]
Greiner, F. [1 ]
Kalantar-Nayestanaki, N. [3 ]
Knoebel, R. [1 ,2 ]
Kurcewicz, J. [2 ]
Lang, J. [1 ]
Moore, I. [4 ]
Mukha, I. [2 ]
Nociforo, C. [2 ]
Petrick, M. [1 ]
Pfuetzner, M. [2 ,5 ]
Pietri, S. [2 ]
Prochazka, A. [2 ]
Rink, A. -K. [1 ]
Rinta-Antila, S. [4 ]
Schaefer, D. [1 ]
Scheidenberger, C. [1 ,2 ]
Takechi, M. [2 ]
Tanaka, Y. K. [2 ]
Winfield, J. S. [2 ]
Yavor, M. I. [6 ]
机构
[1] Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany
[2] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
[3] Univ Groningen, KVI, NL-9747 AA Groningen, Netherlands
[4] Univ Jyvaskyla, FI-40014 Jyvaskyla, Finland
[5] Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland
[6] Russian Acad Sci, Inst Analyt Instrumentat, St Petersburg 190103, Russia
关键词
Cryogenic gas-filled stopping cell; Extraction time; Multiple-reflection time-of-flight mass spectrometer; Direct mass measurement; Projectile fragmentation; Exotic nuclei; ISOBAR-SEPARATION; HEAVY-IONS; SUPER-FRS; ENERGY; TIME; GSI; SYSTEM;
D O I
10.1016/j.nimb.2013.07.063
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
At the FRS Ion Catcher at GSI, projectile and fission fragments are produced at relativistic energies, separated in-flight, range-focused, slowed down and thermalized in a cryogenic stopping cell. A multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) is used to perform direct mass measurements and to provide an isobarically clean beam for further experiments, such as mass-selected decay spectroscopy. A versatile RF quadrupole transport and diagnostics unit guides the ions from the stopping cell to the MR-TOF-MS, provides differential pumping, ion identification and includes reference ion sources. The FRS Ion Catcher serves as a test facility for the Low-Energy Branch of the Super-FRS at the Facility for Antiproton and Ion Research (FAIR), where the cryogenic stopping cell and the MR-TOF-MS will be key devices for the research with stopped projectile and fission fragments that will be performed with the experiments MATS and LaSpec. Off-line tests of the stopping cell yield a combined ion survival and extraction efficiency for Rn-219 ions of about 30% and an extraction time of about 25 ms. The stopping cell and the MR-TOF-MS were commissioned on-line as part of the FRS Ion Catcher. For the first time, a stopping cell for exotic nuclei was operated on-line at cryogenic temperatures. Using a gas density almost two times higher than ever reached before for a stopping cell with RF ion repelling structures, various U-238 projectile fragments were thermalized and extracted with very high efficiency. Direct mass measurements of projectile fragments were performed with the MR-TOF-MS, among them the nuclide Rn-213 with a half-life of 19.5 ms only. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:457 / 462
页数:6
相关论文
共 26 条
[1]   Absolute values of the electron mobility in hydrogen [J].
Bradbury, NE ;
Nielsen, RA .
PHYSICAL REVIEW, 1936, 49 (05) :0388-0393
[2]   On a cryogenic noble gas ion catcher [J].
Dendooven, P ;
Purushothaman, S ;
Gloos, K .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 558 (02) :580-583
[3]  
Dickel T., 2010, THESIS JUSTUS LIEBIG
[4]   Extraction efficiency and extraction time of the SHIPTRAP gas-filled stopping cell [J].
Eliseev, S. A. ;
Block, M. ;
Chaudhuri, A. ;
Di, Z. ;
Habs, D. ;
Herfurth, F. ;
Kluge, H. J. ;
Neumayr, J. B. ;
Plass, W. R. ;
Rauth, C. ;
Thirolf, P. G. ;
Vorobjev, G. ;
Wang, Z. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2007, 258 (02) :479-484
[5]   The Super-FRS project at GSI [J].
Geissel, H ;
Weick, H ;
Winkler, M ;
Münzenberg, G ;
Chichkine, V ;
Yavor, M ;
Aumann, T ;
Behr, KH ;
Böhmer, M ;
Brünle, A ;
Burkard, K ;
Benlliure, J ;
Cortina-Gil, D ;
Chulkov, L ;
Dael, A ;
Ducret, JE ;
Emling, H ;
Franczak, B ;
Friese, J ;
Gastineau, B ;
Gerl, J ;
Gernhäuser, R ;
Hellström, M ;
Jonson, B ;
Kojouharova, J ;
Kulessa, R ;
Kindler, B ;
Kurz, N ;
Lommel, B ;
Mittig, W ;
Moritz, G ;
Mühle, C ;
Nolen, JA ;
Nyman, G ;
Roussell-Chomaz, P ;
Scheidenberger, C ;
Schmidt, KH ;
Schrieder, G ;
Sherrill, BM ;
Simon, H ;
Sümmerer, K ;
Tahir, NA ;
Vysotsky, V ;
Wollnik, H ;
Zeller, AF .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 204 :71-85
[6]   THE GSI PROJECTILE FRAGMENT SEPARATOR (FRS) - A VERSATILE MAGNETIC SYSTEM FOR RELATIVISTIC HEAVY-IONS [J].
GEISSEL, H ;
ARMBRUSTER, P ;
BEHR, KH ;
BRUNLE, A ;
BURKARD, K ;
CHEN, M ;
FOLGER, H ;
FRANCZAK, B ;
KELLER, H ;
KLEPPER, O ;
LANGENBECK, B ;
NICKEL, F ;
PFENG, E ;
PFUTZNER, M ;
ROECKL, E ;
RYKACZEWSKI, K ;
SCHALL, I ;
SCHARDT, D ;
SCHEIDENBERGER, C ;
SCHMIDT, KH ;
SCHROTER, A ;
SCHWAB, T ;
SUMMERER, K ;
WEBER, M ;
MUNZENBERG, G ;
BROHM, T ;
CLERC, HG ;
FAUERBACH, M ;
GAIMARD, JJ ;
GREWE, A ;
HANELT, E ;
KNODLER, B ;
STEINER, M ;
VOSS, B ;
WECKENMANN, J ;
ZIEGLER, C ;
MAGEL, A ;
WOLLNIK, H ;
DUFOUR, JP ;
FUJITA, Y ;
VIEIRA, DJ ;
SHERRILL, B .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1992, 70 (1-4) :286-297
[7]   IONS PENETRATING THROUGH ION-OPTICAL SYSTEMS AND MATTER - NON-LIOUVILLIAN PHASE-SPACE MODELING [J].
GEISSEL, H ;
SCHWAB, T ;
ARMBRUSTER, P ;
DUFOUR, JP ;
HANELT, E ;
SCHMIDT, KH ;
SHERRILL, B ;
MUNZENBERG, G .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1989, 282 (01) :247-260
[8]  
Jesch C., 2008, THESIS JUSTUS LIEBIG
[9]   Online test of the FRS Ion Catcher at GSI [J].
Petrick, M. ;
Plalss, W. R. ;
Behr, K. -H. ;
Bruenle, A. ;
Caceres, L. ;
Clark, J. ;
Di, Z. ;
Elisseev, S. ;
Facina, M. ;
Fettouhi, A. ;
Geissel, H. ;
Hueller, W. ;
Huyse, M. ;
Karagiannis, C. ;
Kindler, B. ;
Knoebel, R. ;
Kudryavtsev, Y. ;
Kurcewicz, J. ;
Levant, T. ;
Litvinov, Yu. A. ;
Lommel, B. ;
Maier, M. ;
Morrissey, D. J. ;
Muenzenberg, G. ;
Portillo, M. ;
Savard, G. ;
Scheidenberger, C. ;
Van Duppen, P. ;
Weick, H. ;
Winkler, M. ;
Zabransky, B. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2008, 266 (19-20) :4493-4497
[10]  
Petrick M., 2008, THESIS JUSTUS LIEBIG