The TAMUTRAP facility: A Penning trap facility at Texas A&M University for weak interaction studies
TL;DR: In this paper, the short endcap electrodes are closed and capable of being placed at an arbitrary potential, which is optimized for observing β-delayed proton decays, but is also well suited for other in-trap and post-trap precision decay experiments.
About: This article is published in International Journal of Mass Spectrometry.The article was published on 2021-10-01. It has received 4 citations till now. The article focuses on the topics: Penning trap & Trap (computing).
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01 Aug 1981
TL;DR: In this paper, the cyclotron frequencies of free protons and electrons in a magnetic field of 5.81 Tesla with superimposed electrostatic quadrupole field have been measured.
Abstract: The cyclotron frequencies of free protons and electrons in a magnetic field of 5.81 Tesla with superimposed electrostatic quadrupole field have been measured. The increase of energy connected with a transition at cyclotron frequency is detected by the measurement of the time of flight through an inhomogeneous magnetic field. From the ratio of the measured cyclotron frequencies of both particles the proton electron mass ratio is deduced. The resultm
p
/m
e
=1,836.1527(11) agrees within the limits of error (0.6 ppm) with the value of the indirect determination.
15 citations
11 Dec 2021-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, a double Penning trap for high-resolution mass separation of the ion beam for trap-assisted spectroscopy and high-accuracy mass spectrometry of short-lived nuclides is described.
Abstract: A double Penning trap is being commissioned at CENBG Bordeaux for the future DESIR/SPIRAL2 facility of GANIL. The setup is designed to perform both high-resolution mass separation of the ion beam for trap-assisted spectroscopy, and high-accuracy mass spectrometry of short-lived nuclides. In this paper, the technical details of the new device are described. First offline tests with the purification trap are also presented, showing a mass resolving power of about 10 5 .
2 citations
07 Sep 2022
TL;DR: In this article , the cyclotron frequency of the radiating beta particles in a magnetic field is used to determine the beta energy precisely, which can be applied to a variety of nuclei, in particular, opening its reach to searches for evidence of new physics beyond the TeV scale via precision beta-decay measurements.
Abstract: We present an apparatus for detection of cyclotron radiation that allows a frequency-based beta energy determination in the 5 keV to 5 MeV range, characteristic of nuclear beta decays. The cyclotron frequency of the radiating beta particles in a magnetic field is used to determine the beta energy precisely. Our work establishes the foundation to apply the cyclotron radiation emission spectroscopy (CRES) technique, developed by the Project 8 collaboration, far beyond the 18-keV tritium endpoint region. We report initial measurements of beta^-s from 6He and beta^+s from 19Ne decays to demonstrate the broadband response of our detection system and assess potential systematic uncertainties for beta spectroscopy over the full (MeV) energy range. This work is an important benchmark for the practical application of the CRES technique to a variety of nuclei, in particular, opening its reach to searches for evidence of new physics beyond the TeV scale via precision beta-decay measurements.
1 citations
17 Mar 2023-Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms
TL;DR: A 3He-driven IGISOL production station and mass separator have been designed to produce neutron-deficient low-mass isotopes at the Cyclotron Institute for the TAMUTRAP facility as discussed by the authors .
Abstract: A new 3He-driven IGISOL production station and mass separator have been designed to produce neutron-deficient low-mass isotopes at the Cyclotron Institute for the TAMUTRAP facility. The LSTAR design has a mass resolution M/ΔM≥3,000 to reject contaminants with >95% efficiency.
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1,863 citations
1,283 citations
TL;DR: The second part of the new evaluation of atomic masses, AME2020, is described in Part I as discussed by the authors using least-squares adjustments to all evaluated and accepted experimental data.
Abstract: This is the second part of the new evaluation of atomic masses, AME2020. Using least-squares adjustments to all evaluated and accepted experimental data, described in Part I, we derived tables with numerical values and graphs which supersede those given in AME2016. The first table presents the recommended atomic mass values and their uncertainties. It is followed by a table of the influences of data on primary nuclides, a table of various reaction and decay energies, and finally, a series of graphs of separation and decay energies. The last section of this paper provides all input data references that were used in the AME2020 and the NUBASE2020 evaluations.
1,248 citations
TL;DR: In this paper, the theory of a single charged particle in a Penning trap is reviewed, beginning with simple first-order orbits and progressively dealing with small corrections which must be considered owing to the experimental precision that is being achieved.
Abstract: A single charged particle in a Penning trap is a bound system that rivals the hydrogen atom in its simplicity and provides similar opportunities to calculate and measure physical quantities at very high precision. We review the theory of this bound system, beginning with the simple first-order orbits and progressively dealing with small corrections which must be considered owing to the experimental precision that is being achieved. Much of the discussion will also be useful for experiments with more particles in the trap, and several of the mathematical techniques have a wider applicability.
1,094 citations
TL;DR: In this paper, the authors present a review of all the present and future experiments anywhere close to reality and discuss how to project into the experimental future, using their own experience of studying the machine-in-the-desert.
Abstract: In order to project into the experimental future, we need some historical perspective. We should be aware of trends (e.g., vectors) so that we can see where a “natural” evolution of HEP will take us and we should be sensitive to problems that, although minor in the 1960s and manageable in the 197Os, have reached near crises states in the 1980s and will become the death knell of the subject in the 1990s. Although I started this review with an idea of seeing how we were doing with our ability to measure in space and time resolution, I became trapped into sociology, so I must then also discuss this as well. My assignment is awkward because all of the present and future experiments anywhere close to reality will be discussed in this program of speakers. What then can I add? Accelerators? About 30 months ago and about five miles from here in Snowmass ’82, I stated my conviction that the scientific need for observing a 1 TeV mass scale was overwhelming, that the technology was in hand, that the cost was moderate, and that we could not afford to dabble in intermediate steps. I would like to claim here that this talk, which coined the name, “Machine-in-the-Desert” or “Desertron,” was the opening shot in what was to become the goal of H E P for the next decade. After an enormous “Sturm und Drang,” we have SSC. It is much too early to say whether or not this was a foolhardy decision, but if we fail, it won’t be because we aren’t unified and convinced that this is the right scientific step. The more we look at the technology, the better it looks. The more we look at the science, the more it is the right step. I think we are committed to SSC, but we must be prepared for some setbacks and disappointments. However, we have a reasonable program to keep us going and if the SSC is under construction by the time LEP and HERA come on (1991-92), we’ll be very busy building the machine and building the detectors that are to use it. Therefore, I want to talk history now and since I’m not a scholar, but a student, I largely will use my own experience. It is also well known that, a t my age, looking back is more pleasant than looking ahead. Let me show you a number of figures, the first of which are pages from some miscellaneous Physical Review papers published in the ancient days when data was recorded by quill pens on fine parchment. FIGURE 1 is from research done on the Nevis cyclotron, which in 1950 was the world’s highest energy machine a t 400 MeV. The device was a Wilson Cloud Chamber working in a magnetic field of 5000 gauss. A total of 4000 photographs yielded the data, which was scanned and analyzed by two students and one assistant professor (me). FIGURE 2 is research done a t BNL, the Cosmotron. Here, 5000 pictures in a “giant” 36” cloud chamber were measured by one
594 citations