Speaker
Description
The Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy (MIRACLS) is a novel technique to increase the sensitivity of high-precision collinear laser spectroscopy (CLS). To access exotic short-lived radionuclides with low production yields, MIRACLS performs CLS in a Multi-Reflection Time-of-Flight (MR-ToF) device where ion bunches bounce back and forth between two electrostatic mirrors. Consequently, the ions pass the measurement region multiple times which increases the laser-ion interaction and observation time, hence increasing the sensitivity.
Building on experience from a successful proof-of-principle phase [1-3], the high-resolution MIRACLS device is now being built for online operation at the LA2 beamline of ISOLDE. The MR-ToF instrument will be the first to operate at a beam energy of 30 keV, and its use for CLS imposes stringent requirement on the ion beam quality, especially in longitudinal ion-bunch emittance. For this purpose, MIRACLS also hosts its own buffer-gas filled Paul trap for optimal ion-beam preparation [4]. This Paul trap is currently being commissioned with an offline ion source, in preparation for the acceptance of ISOLDE beams.
This poster contribution will report on the commissioning results of MIRACLS’ Paul trap.
References:
[1] Maier, F. et al. Simulations of a Proof-of-Principle Experiment for Collinear Laser Spectroscopy within a Multi-Reflection Time-of-Flight Device. Hyperfine Interact 240, 54. 13. http://cds.cern.ch/record/2690576 (2019).
[2] Sels, S. M. C. et al. First steps in the development of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy. Nucl. Instrum. Methods Phys. Res., B 463, 310–314. 5 p. http://cds.cern.ch/record/2672965 (2020).
[3] Lagaki, V et al. An accuracy benchmark of the MIRACLS apparatus: Conventional, single-passage collinear laser spectroscopy inside a MR-ToF device. Nucl. Instrum. Methods Phys. Res., A 1014, 165663. 10 p. http://cds.cern.ch/record/2778916 (2021).
[4] Kanitz, C. Construction and characterization of a Paul trap for laser spectroscopy of exotic radionuclides in an MR-ToF device Master thesis (2021).
