Development of a high-precision Penning trap magnetometer for the LEBIT facility

Lincoln, D. L.; Baker, Robert; Benjamin, Anne; Bollen, G.; Redshaw, Matthew; Ringle, R.; Schwarz, S.; Sonea, A.; Valverde, A. A.

doi:10.1016/j.ijms.2014.08.005

Cited by 4 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hence, the residual gas ions are likely H 2 O + or perhaps H 3 O + , and the leaked gas ions N + 2 . These findings are consistent with the typical residual gas makeup in a vacuum system that has not been baked [65,66], and with air being leaked into the vacuum system along with the noble gases. Further details of the commissioning of the PITS can be found in Ref.…”

Section: Pitssupporting

confidence: 81%

“…After confirming that we could create and detect ions, we looked for the massdependent reduced-cyclotron motion by using a dipole drive sweep near the cyclotron frequency f + of H 3 O + . This ion species was chosen since it was expected to be present when ionizing residual background gas as observed previously in other systems, e.g., [65,66]. We did observe a peak at f + ≈ 9.69 MHz, consistent with that of an ion having m/q = 19 in an ≈12 T magnetic field.…”

Section: Capture Trapsupporting

confidence: 56%

See 1 more Smart Citation

Status of CHIP-TRAP: The Central Michigan University High-Precision Penning Trap

Redshaw,

Bhandari,

Gamage

et al. 2023

Atoms

View full text Add to dashboard Cite

Precise and accurate atomic mass data provide crucial information for applications in a wide range of fields in physics and beyond, including astrophysics, nuclear structure, particle and neutrino physics, fundamental symmetries, chemistry, and metrology. The most precise atomic mass measurements are performed on charged particles confined in a Penning trap. Here, we describe the development, status, and outlook of CHIP-TRAP: the Central Michigan University high-precision Penning trap. CHIP-TRAP aims to perform ultra-high precision (∼1 part in 1011 fractional precision) mass measurements on stable and long-lived isotopes produced with external ion sources and transported to the Penning traps. Along the way, ions of a particular m/q are selected with a multi-reflection time-of-flight mass separator (MR-TOF-MS), with further filtering performed in a cylindrical capture trap before the ions are transported to a pair of hyperbolic measurement traps. In this paper, we report on the design and status of CHIP-TRAP and present results from the commissioning of the ion sources, MR-TOF-MS, and capture trap. We also provide an outlook on the continued development and commissioning of CHIP-TRAP.

show abstract

Section: Pitssupporting

confidence: 81%

Section: Capture Trapsupporting

confidence: 56%

Status of CHIP-TRAP: The Central Michigan University High-Precision Penning Trap

Redshaw,

Bhandari,

Gamage

et al. 2023

Atoms

View full text Add to dashboard Cite

show abstract

“…The FT-ICR signal strength for a given eigenmotion(s) is also highly dependent on which of the segmented ring electrodes in the Penning trap are used for detection or excitation [35,36]. Often this detection scheme is chosen to maximize the signal amplitude of the eigenfrequency being probed.…”

Section: Fourier Transform Ion Cyclotron Resonance Techniquementioning

confidence: 99%

“…Simulations were performed in [36] to determine an optimal configuration of detection/excitation electrodes for cyclotron and reduced cyclotron frequency pickup. In [35], simultaneous detection of ω c and ω + using a single detection circuit was demonstrated, which provides an unambiguous ion signature if both frequencies are observed. However, this method is still in development for SIPT and would also require frequency identification in two separate regions.…”

Section: Fourier Transform Ion Cyclotron Resonance Techniquementioning

confidence: 99%

Applications of Machine Learning and Neural Networks for FT-ICR Mass Measurements with SIPT

Campbell,

Bollen,

Hamaker

et al. 2023

Atoms

View full text Add to dashboard Cite

The single-ion Penning trap (SIPT) at the Low-Energy Beam Ion Trapping Facility has been developed to perform precision Penning trap mass measurements of single ions, ideal for the study of exotic nuclei available only at low rates at the Facility for Rare Isotope Beams (FRIB). Single-ion signals are very weak—especially if the ion is singly charged—and the few meaningful ion signals must be disentangled from an often larger noise background. A useful approach for simulating Fourier transform ion cyclotron resonance signals is outlined and shown to be equivalent to the established yet computationally intense method. Applications of supervised machine learning algorithms for classifying background signals are discussed, and their accuracies are shown to be ≈65% for the weakest signals of interest to SIPT. Additionally, a deep neural network capable of accurately predicting important characteristics of the ions observed by their image charge signal is discussed. Signal classification on an experimental noise dataset was shown to have a false-positive classification rate of 10.5%, and 3.5% following additional filtering. The application of the deep neural network to an experimental 85Rb+ dataset is presented, suggesting that SIPT is sensitive to single-ion signals. Lastly, the implications for future experiments are discussed.

show abstract

Fourier Transform Ion Cyclotron Resonance Mass Spectrometry at the Cyclotron Frequency

Nagornov

Kozhinov

Tsybin

2017

J. Am. Soc. Mass Spectrom.

View full text Add to dashboard Cite

The phenomenon of ion cyclotron resonance allows for determining mass-to-charge ratio, m/z, of an ensemble of ions by means of measurements of their cyclotron frequency, ω . In Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), the ω quantity is usually unavailable for direct measurements: the resonant state is located close to the reduced cyclotron frequency (ω), whereas the ω and the corresponding m/z values may be calculated via theoretical derivation from an experimental estimate of the ω quantity. Here, we describe an experimental observation of a new resonant state, which is located close to the ω frequency and is established because of azimuthally-dependent trapping electric fields of the recently developed ICR cells with narrow aperture detection electrodes. We show that in mass spectra, peaks close to ω frequencies can be reduced to negligible levels relative to peaks close to ω frequencies. Due to reduced errors with which the ω quantity is obtained, the new resonance provides a means of cyclotron frequency measurements with precision greater than that achieved when ω frequency peaks are employed. The described phenomenon may be considered for a development into an FT-ICR MS technology with increased mass accuracy for applications in basic research, life, and environmental sciences. Graphical Abstract ᅟ.

show abstract

Development of a high-precision Penning trap magnetometer for the LEBIT facility

Cited by 4 publications

References 39 publications

Status of CHIP-TRAP: The Central Michigan University High-Precision Penning Trap

Status of CHIP-TRAP: The Central Michigan University High-Precision Penning Trap

Applications of Machine Learning and Neural Networks for FT-ICR Mass Measurements with SIPT

Fourier Transform Ion Cyclotron Resonance Mass Spectrometry at the Cyclotron Frequency

Contact Info

Product

Resources

About