Ionplus AG

Lerzenstrasse 12

8953 Dietikon



Tel    +41 43 322 31 60

Fax   +41 43 322 31 79


Upcoming Events

23rd Radiocarbon Conference

Ionplus will attend the 23rd International Radiocarbon Conference in Trondheim, Norway, June 17 - 22, 2018.

Ionplus User Workshop

Ionplus is organizing a user workshop at the 23rd Radiocarbon Conference, June 17, 2018.


Join our user workshop for Ionplus customers and everyone interested. Share your insights, exchange with other MICADAS, AGE and GIS users and learn about news at Ionplus. The format will consist of short user presentations of 5-10 minutes. Presentations will be grouped by common topics and will be followed by a plenum discussion. Register for the conference here.

Past Events


Ionplus attended  the 7th East Asia AMS Symposium in Guilin, China, November 20 - 25, 2017.

AMS 14 Conference

Ionplus attended the 14th International AMS Conference in Ottawa, Canada, August 14 - 18, 2017.

New Production Site

Ionplus has set up a brand new production site in Zurich. Pictures are online now.

JAMS 18 Conference

Ionplus attended the 18th Japanese AMS Conference (JAMS 18) in Tokyo, Japan, March 4 - 5, 2016.

6th EA - AMS Conference

Ionplus attended the 6th East Asian AMS conference in Taipei, Taiwan,

October 5 - 8, 2015.

AMS-13 Conference

Ionplus attended the 13th International Conference on Acceleraotr Mass Spectrometry in Aix-en-Provence, France,

August 24 - 29, 2014.

MICADAS - Mini Carbon Dating System

In 2016, Ionplus has started the production of the MIni CArbon DAting System (MICADAS). The first prototype of MICADAS was developed and built by the Laboratory of Ion Beam Physics (LIP) at ETH Zurich in 2004. Since then, 11 instruments have been built and delivered to customers in Europe and the US. In 2016, Ionplus took over production of the MICADAS systems from ETH Zurich.


The MICADAS facility
The MICADAS facility

With its dimensions of only 3.4 m x 2.6 m x 2 m, MICADAS is the most compact commercially available 14C-AMS system in the world. Its new helium stripping offers a very high transmission of 47% and outstanding measurement stability, thus significantly reducing the need for retuning.


The MICADAS hybrid cesium sputter ion source is equipped with a random access sample changer that holds up to 40 graphite or gas cathodes. Stable ion beam currents of 50 to 100 μA C- and 10 to 20 μA are readily achieved in routine operation with solid and gas samples, respectively. The acceleration potential of 200 kV is provided by a solid state power supply (no moving parts) and the terminal is vacuum insulated (no SF6 or other insulation gases required). A state of the art gas ionization detector with low noise and virtually no degradation provides the most reliable detection of 14C ions. With this configuration, blanks of 50'000 years BP (radiocarbon age) and better are obtained.


In conjunction with the Gas Interface System (GIS), MICADAS performs fully automated gas measurements with an auto-sampler, an elemental analyzer or CO2 filled glass or quartz tubes.

Key Features and Specifications

  • Helium stripping (47% 14C-transmission)
  • Simple and fast tuning, high measurement stability over long time
  • Hybrid Cs negative sputter ion source for solid and gas cathodes
  • Random access sample changer with 40 positions
  • Magazine changes allow continuous measurements without breaking the vacuum
  • Negative ion currents of 50 to 100 μA (on full-sized graphite samples and 10 to 20 μA (on 20 μg C or more) for solid and gas samples, respectively
  • 200 kV accelerator on a vacuum insulated high voltage platform with a low maintenance solid state power supply
  • Low-noise, non-degradable gas ionization detector
  • Dating of samples back to 50’000 years BP (radiocarbon years)
  • Dimensions and weight: 3.4 m x 2.6 m x 2 m, 4500 kg