The TITAN in-trap decay spectroscopy facility at TRIUMF Journal Articles uri icon

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  • This article presents an upgraded in-trap decay spectroscopy apparatus which has been developed and constructed for use with TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN). This device consists of an open-access electron-beam ion-trap (EBIT), which is surrounded radially by seven low-energy planar Si(Li) detectors. The environment of the EBIT allows for the detection of low-energy photons by providing backing-free storage of the radioactive ions, while guiding charged decay particles away from the trap centre via the strong (up to 6 T) magnetic field. In addition to excellent ion confinement and storage, the EBIT also provides a venue for performing decay spectroscopy on highly-charged radioactive ions. Recent technical advancements have been able to provide a significant increase in sensitivity for low-energy photon detection, towards the goal of measuring weak electron-capture branching ratios of the intermediate nuclei in the two-neutrino double beta ($2\nu\beta\beta$) decay process. The design, development, and commissioning of this apparatus are presented together with the main physics objectives. The future of the device and experimental technique are discussed.


  • Leach, KG
  • Grossheim, A
  • Lennarz, Annika
  • Brunner, T
  • Crespo López-Urrutia, JR
  • Gallant, AT
  • Good, M
  • Klawitter, R
  • Kwiatkowski, AA
  • Ma, T
  • Macdonald, TD
  • Seeraji, S
  • Simon, MC
  • Andreoiu, C
  • Dilling, J
  • Frekers, D

publication date

  • April 2015