A1 Journal article (refereed)
Miniaturised cooler-buncher for reduction of longitudinal emittance at IGISOL (2025)
Virtanen, V.A., Eronen, T., Kankainen, A., Beliuskina, O., Campbell, P., Delaplanche, R., Ge, Z., de Groote, R.P., Hukkanen, M., Jaries, A., Kronholm, R., Moore, I.D., Raggio, A., Roubin A. de, Ruotsalainen, J., Schuh, M. (2025). Miniaturised cooler-buncher for reduction of longitudinal emittance at IGISOL. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1072, Article 170186. https://doi.org/10.1016/j.nima.2024.170186
JYU authors or editors
![]() | |
![]() | |
![]() | |
![]() | |
![]() | |
![]() | |
![]() | |
![]() |
Publication details
All authors or editors: Virtanen, V.A.; Eronen, T.; Kankainen, A.; Beliuskina, O.; Campbell, P.; Delaplanche, R.; Ge, Z.; de Groote, R.P.; Hukkanen, M.; Jaries, A.; et al.
Journal or series: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ISSN: 0168-9002
eISSN: 1872-9576
Publication year: 2025
Publication date: 07/01/2025
Volume: 1072
Article number: 170186
Publisher: Elsevier
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.nima.2024.170186
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/99522
Abstract
A new linear Paul trap section has been constructed to replace the existing bunching section of the radiofrequency quadrupole (RFQ) cooler-buncher at the IGISOL radioactive ion beam facility. The cooler-buncher is used to transform a continuous ion beam to temporally short bursts of ions. The new miniaturised cooler-buncher section produces significantly shorter bunches in time, required by the new Multi-Reflection Time-of-Flight Mass Spectrometer. In this article, we report on the longitudinal properties of the ion bunches and compare the results to an analytical model derived for axial distributions of ions confined in a harmonic trap at thermodynamical equilibrium with a heat bath. The new buncher configuration delivers < 75 ns full-width at half-maximum bunches with a longitudinal emittance of 200 eVns. The bunches have a full-width at half-maximum energy spread of 10 eV. Total transmission efficiency of 45%–65% has been measured from the isotope separator focal plane through the RFQ cooler-buncher, Multi-Reflection Time-of-Flight Mass Spectrometer and JYFLTRAP double Penning trap.
Keywords: mass spectrometry; particle accelerators; particle physics
Free keywords: IGISOL; RFQ cooler-buncher; longitudinal emittance
Contributing organizations
Related projects
- Tarkkuusmassamittauksia eitttäin matalien Q-arvojen määrittämiseksi mahdollistaa kandidaattiytimistä neutriinojen tutkimiseen
- Eronen, Tommi
- Research Council of Finland
- High precision atomic mass measurements of ultralow Q-value candidate nuclei for neutrino sudies-research costs
- Eronen, Tommi
- Research Council of Finland
- High precision atomic mass measurements of ultralow Q-value candidate nuclei for
neutrino studies (research costs)- Eronen, Tommi
- Research Council of Finland
- Probing the ActiNides: THeory and Experiment for Radioisotopes
- Moore, Iain
- Research Council of Finland
- Heavy Exotic Nuclei for Nuclear Astrophysics
- Kankainen, Anu
- Research Council of Finland
- Masses, Isomers and Decay Studies for Elemental Nucleosynthesis
- Kankainen, Anu
- European Commission
- Laser Ionization and Spectroscopy of Actinide elements
- Moore, Iain
- European Commission
Ministry reporting: Yes
VIRTA submission year: 2025
Preliminary JUFO rating: 1