Invited article: development of high-field superconducting Ioffe magnetic traps.

  title={Invited article: development of high-field superconducting Ioffe magnetic traps.},
  author={L. W. Yang and C. R. Brome and J. S. Butterworth and S. N. Dzhosyuk and C. E. H. Mattoni and D. N. Mckinsey and Robert A. Michniak and John M. Doyle and Robert A. Golub and Ekaterina Korobkina and Christopher O'Shaughnessy and Grant R. Palmquist and P. N. Seo and Paul Reece Huffman and Kevin J. Coakley and H. Pieter Mumm and Alan K. Thompson and G. L. Yang and Steve Keith Lamoreaux},
  journal={The Review of scientific instruments},
  volume={79 3},
We describe the design, construction, and performance of three generations of superconducting Ioffe magnetic traps. The first two are low current traps, built from four racetrack shaped quadrupole coils and two solenoid assemblies. Coils are wet wound with multifilament NbTi superconducting wires embedded in epoxy matrices. The magnet bore diameters are 51 and 105 mm with identical trap depths of 1.0 T at their operating currents and at 4.2 K. A third trap uses a high current accelerator-type… 
A large octupole magnetic trap for research with atomic hydrogen.
We describe the design and performance of a large magnetic trap for storage and cooling of atomic hydrogen (H). The trap operates in the vacuum space of a dilution refrigerator at a temperature of
How does a magnetic trap work
Magnetic trapping is a cornerstone of modern ultracold physics and its applications, including quantum information processing, quantum metrology, quantum optics, and high-resolution spectroscopy.
Apparatus and Methods for a New Measurement of the Electron and Positron Magnetic Moments
This thesis presents contributions to two precision measurement experiments: electron and positron g/2, and ATRAP antihydrogen spectroscopy. The magnetic moment of the electron in Bohr magnetons,
Plasma and trap-based techniques for science with positrons
In recent years, there has been a wealth of new science involving low-energy antimatter (i.e., positrons and antiprotons) at energies ranging from 10 to less than 10 eV. Much of this progress has
Beta decay measurements with ultracold neutrons: a review of recent measurements and the research program at Los Alamos National Laboratory
We present a review of the motivation and results of recent experiments which utilize ultracold neutrons for measurements of neutron beta decay. Because these experiments hinge critically on the
Exactly solvable relativistic model with the anomalous interaction
A special class of Dirac-Pauli equations with time-like vector potentials of an external field is investigated. An exactly solvable relativistic model describing the anomalous interaction of a


Performance of the eight superconducting quadrupole magnets for the TRISTAN low-beta insertions
The low-beta insertion quadrupoles are iron-free superconducting magnets with an inner coil diameter of 140 mm, an effective length of 1.14 m, and a nominal gradient of 70 T/m. The coils, which are
Deep superconducting magnetic traps for neutral atoms and molecules
We describe the design, construction and performance of three realizations of a high-field superconducting magnetic trap for neutral atoms and molecules. Each of these traps utilizes a pair of
Determination of the Neutron Lifetime Using Magnetically Trapped Neutrons
The measured trap lifetime at a helium temperature of 300 mK and with no ameliorative magnetic ramping is substantially shorter than the free neutron lifetime, consistent with the currently accepted value of thefree neutron lifetime.
Magnetostatic trapping fields for neutral atoms.
Basic trap configurations are characterized using both the exact expressions for the field, and a multipole polynomial expansion that facilitates studies of symmetry properties and classical or quantum orbits.
Magnetic trapping of neutrons
The experiment verifies theoretical predictions regarding the loading process and magnetic trapping of neutrons and further refinement of this method should lead to improved precision in the neutron lifetime measurement.
Magnetic trapping of neutral particles: Classical and quantum-mechanical study of a Ioffe–Pritchard type trap
Recently, we developed a method for calculating the lifetime of a particle inside a magnetic trap with respect to spin flips, as a first step in our efforts to understand the quantum mechanics of
Magnetic trapping of calcium monohydride molecules at millikelvin temperatures
Recent advances in the magnetic trapping and evaporative cooling of atoms to nanokelvin temperatures have opened important areas of research, such as Bose–Einstein condensation and ultracold atomic
Kevlar support for thermal isolation at low temperatures
A cryogenic support has been developed that rigidly attaches two U‐shaped aluminum beams to each other with strands of Kevlar. The Kevlar creates a very strong and stiff coupling between the beams
Materials at Low Temperatures
The aim of this volume is to establish a firm basis for the understanding of materials behavior and property measurement to use for design and materials selection at low temperatures. The fourteen