The TITAN EBIT charge breeder for mass measurements on highly charged short-lived isotopes—First online operation

High-precision QEC -value measurement of the superallowed β+ emitter Mg22 and an ab

“…The TITAN facility consists of four primary components: (i) A Radio-Frequency Quadrupole (RFQ) linear Paul trap [27,28], (ii) a Multi-Reflection Time-of-Flight (MR-ToF) isobar separator [29], iii) an Electron-Beam Ion Trap (EBIT) for generating Highly Charged Ions (HCIs) [30,31] and performing decay spectroscopy [32,33], and (iv) a 3.7 T, high-precision mass Measurement PEnning Trap (MPET) [34]. Following the delivery of the continuous A = 22 ISAC beam to TITAN, ions were injected into the RFQ where they were cooled using a He buffer gas.…”

Low-Background In-Trap Decay Spectroscopy with TITAN at TRIUMF

“…TRIUMF's Ion Trap for Atomic and Nuclear Science (TITAN) [6] consists of three ion traps; (i) an RFQ linear Paul trap [7] for buffer-gas cooling and bunching the low-energy ion beam, (ii) a 3.7 T, high-precision mass-measurement Penning-trap (MPET) [14], and (iii) an electron-beam ion trap (EBIT) which provides highly charged ions (HCIs) [9]. TITAN resides at the Isotope Separator and Accelerator (ISAC) facility at TRIUMF, which employs a high-intensity (up to 100 µA) beam of 500 MeV protons to produce RIBs using the isotope separation on-line (ISOL) technique [10].…”

“…The TITAN EBIT confines ions (i) axially by an electrostatic square-well potential, and (ii) radially by the electron-beam space-charge potential and magnetic field [9]. HCIs are generated by successive electron-impact ionization using a the 100 mA, 1.7 keV electron beam compressed by a strong magnetic field.…”

“…HCIs are generated by successive electron-impact ionization using a the 100 mA, 1.7 keV electron beam compressed by a strong magnetic field. The up-to 6 Tesla magnetic field is produced by two superconducting Nb 3 Sn coils in a Helmholtz-like configuration [9]. To observe the characteristic photons from the EC decays, each of the EBIT's seven external ports is occupied by a 5 mm thick Si(Li) crystal, which is optimized for the detection of X-rays [5].…”

Precision mass measurements of short-lived nuclides for nuclear structure studies at TITAN

“…The ions are cooled, accumulated and then extracted as a low-emittance bunched beam. The ion-bunch is sent either directly to the measurement Penning trap (MPET) for mass measurement using singly-charged ions, or deflected towards the EBIT [29] for charge breeding and consequently sent to the MPET for mass measurement using highly-charged ions. A Bradbury-Nielsen gate [30] for selecting a specific mass-to-charge ratio prior to the injection into the MPET is employed.…”