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Stored and Cooled Ions Division
Max Planck SocietyMax Planck Institute for Nuclear PhysicsUniversity of Heidelberg Stored and Cooled Ions Division
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Tel.: +49 6221 516-851
Fax: +49 6221 516-852
Postal Address
Max Planck Institute for Nuclear Physics
P.O. Box 10 39 80
69029 Heidelberg
Visitor Address
Max Planck Institute for Nuclear Physics
Saupfercheckweg 1
Building: Gentner lab,
room 134
69117 Heidelberg



Klaus Blaum receives the Gothenburg Lise Meitner Award 2016
Our division director Prof. Klaus Blaum has been selected to receive the Gothenburg Lise Meitner Prize 2016 "for the development of innovative techniques for high-precision measurements of stored radioactive ions" ... >


Novel Cryogenic Storage Ring CSR enables the investigation of molecular reactions under interstellar conditions
More than 180 different molecules have been identified in interstellar space to date, among them complex organic molecules and molecular ions. This molecular complexity is surprising ... >


Thu., May 12, 2016, 11:15, Otto Hahn lecture hall ... >


Advanced seminar "Stored and Cooled Ions"
Wed., 4. May 2016, 15:00, Seminar Room Blaum ... >
Ring Lecture AMO Physics in Heidelberg
Fri., 6. May 2016, 14:15, INF 227 / SR 2.402 ... >
Experimentalphysik IV
Lecture: weekly, on Mon./Wed. 11:15-13:00, Otto-Haxel Hörsaal, KIP, INF 227 ... >
Tutorial Klaus Blaum: weekly, on Fri. 14:15-16:00, INF 227 / SR 2.403 ... >


Welcome to the homepage of the Stored and Cooled Ions Division
Director: Prof. Dr. Klaus Blaum

  • A Penning trap for precision mass measurements
  • Electrodes of a Penning trap
  • An ion with only one electron stored in a cylindrical Penning trap
  • 7 T superconducting magnet for PENTATRAP
  • A liquid-nitrogen-cooled GaAs photocathode producing electron beams with internal temperatures down to 10 K
  • View onto the CSR just before its commissioning at cryogenic temperatures in April 2015
  • CAD drawing of the laser photodetachment line for injection of neutral atomic or molecular beams into the CSR
  • Profile of the first beam of argon ions in the not yet cooled CSR on March 17, 2014
  • The cryogenic ion trap used as a prototype for the CSR

The experimental working group of the division is concerned with precision experiments on stored and cooled ions as well as with the investigation of fundamental processes of molecular ions. For this purpose short-lived radionuclides, highly-charged ions or simple molecular ions are trapped in Penning traps and storage rings under conditions as they also occur in space. Another main research field of the division is the development of novel storage, cooling and detection techniques for future experiments.