J. Nuber
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View article: Phase space compression of a positive muon beam in two spatial dimensions
Phase space compression of a positive muon beam in two spatial dimensions Open
We present the first demonstration of simultaneous phase space compression in two spatial dimensions of a positive muon beam, the first stage of the novel high-brightness muon beam under development by the muCool collaboration at the Paul …
View article: Phase space compression of a positive muon beam in two spatial dimensions
Phase space compression of a positive muon beam in two spatial dimensions Open
We present the first demonstration of simultaneous phase space compression in two spatial dimensions of a positive muon beam, the first stage of the novel high-brightness muon beam under development by the muCool collaboration at the Paul …
View article: Phase space compression of a positive muon beam in two spatial dimensions
Phase space compression of a positive muon beam in two spatial dimensions Open
We present the first demonstration of simultaneous phase space compression in two spatial dimensions of a positive muon beam, the first stage of the novel high-brightness muon beam under development by the muCool collaboration at the Paul …
View article: Supporting Teaching Assistants in a Community of Practice
Supporting Teaching Assistants in a Community of Practice Open
We present a framework that supports physics teaching assistants in their teaching duties during exercise classes and that fosters their professional teaching development. The framework relies on the concept of Communities of Practice comb…
View article: Towards muon cooling at the Paul Scherrer Institute
Towards muon cooling at the Paul Scherrer Institute Open
At the Paul Scherrer Institute, the muCool device is being developed to compress the 6D phase space of a standard μ+ beam by a factor of 109 with up to 10-4 efficiency. Efficient compression has been observed using a cryogenic helium gas t…
View article: Diffusion of muonic hydrogen in hydrogen gas and the measurement of the 1$s$ hyperfine splitting of muonic hydrogen
Diffusion of muonic hydrogen in hydrogen gas and the measurement of the 1$s$ hyperfine splitting of muonic hydrogen Open
The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen ( \mu p) with 1 ppm accuracy by means of pulsed laser spectroscopy. In the proposed experiment, the \mu p atom is excite…
View article: Report on 2211.08297v2
Report on 2211.08297v2 Open
The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (µp) with 1 ppm accuracy by means of pulsed laser spectroscopy.In the proposed experiment, the µp atom is excited by a laser…
View article: Room-temperature emission of muonium from aerogel and zeolite targets
Room-temperature emission of muonium from aerogel and zeolite targets Open
Novel emitters of muonium (Mu = μ+ + e−) with high conversion efficiencies can enhance the precision of muonium spectroscopy experiments and enable next-generation searches for new physics. At the Paul Scherrer Institute (PSI), we investig…
View article: Laser excitation of the 1s-hyperfine transition in muonic hydrogen
Laser excitation of the 1s-hyperfine transition in muonic hydrogen Open
The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen ( \mu p) with 1 ppm accuracy by means of pulsed laser spectroscopy to determine the two-photon-exchange contribution with …
View article: Laser excitation of the 1s-hyperfine transition in muonic hydrogen
Laser excitation of the 1s-hyperfine transition in muonic hydrogen Open
The CREMA collaboration is pursuing a measurement of the ground-state
\nhyperfine splitting (HFS) in muonic hydrogen ($\\mu$p) with 1 ppm accuracy by
\nmeans of pulsed laser spectroscopy to determine the two-photon-exchange
\ncontribution …
View article: Report on 2112.00138v2
Report on 2112.00138v2 Open
The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (µp) with 1 ppm accuracy by means of pulsed laser spectroscopy to determine the two-photon-exchange contribution with 2 × 10…
View article: Report on 2112.00138v2
Report on 2112.00138v2 Open
The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (µp) with 1 ppm accuracy by means of pulsed laser spectroscopy to determine the two-photon-exchange contribution with 2 × 10…
View article: Report on 2112.00138v2
Report on 2112.00138v2 Open
The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (µp) with 1 ppm accuracy by means of pulsed laser spectroscopy to determine the two-photon-exchange contribution with 2 × 10…
View article: Science Case for the new High-Intensity Muon Beams HIMB at PSI
Science Case for the new High-Intensity Muon Beams HIMB at PSI Open
In April 2021, scientists active in muon physics met to discuss and work out the physics case for the new High-Intensity Muon Beams (HIMB) project at PSI that could deliver of order $10^{10}$\,s$^{-1}$ surface muons to experiments. Ideas a…
View article: Engaging Physics Tutoring: A didactical toolbox for teaching assistants (TAs)
Engaging Physics Tutoring: A didactical toolbox for teaching assistants (TAs) Open
In this paper we present a project dedicated to the development of a didactical toolbox of material for teaching assistants (TAs) supervising exercise classes for non-physics majors at ETH Zurich. With our materials we were able to support…
View article: Development of next generation muon beams at the Paul Scherrer Institute
Development of next generation muon beams at the Paul Scherrer Institute Open
The Paul Scherrer Institute (PSI) provides the world's highest intensity muon beam of Ó(108)μ+/s at 28MeV/c. The HiMB project aims to improve this rate by two orders of magnitude. Meanwhile, the muCool collaboration is developing a device …
View article: Compact 20-pass thin-disk amplifier insensitive to thermal lensing
Compact 20-pass thin-disk amplifier insensitive to thermal lensing Open
We present a multi-pass amplifier which passively compensates for distortions of the spherical phase front occurring in the active medium. The design is based on the Fourier transform propagation which makes the output beam parameters inse…
View article: Towards nuclear structure with radioactive muonic atoms
Towards nuclear structure with radioactive muonic atoms Open
The muX project at the Paul Scherrer Institut aims to perform highresolution muonic atom X-ray spectroscopy for the extraction of nuclear charge radii of radioactive isotopes that can be handled only in microgram quantities. Measurements o…
View article: The next generation of laser spectroscopy experiments using light muonic atoms
The next generation of laser spectroscopy experiments using light muonic atoms Open
Precision spectroscopy of light muonic atoms provides unique information about the atomic and nuclear structure of these systems and thus represents a way to access fundamental interactions, properties and constants. One application compri…
View article: The next generation of laser spectroscopy experiments using light muonic atoms
The next generation of laser spectroscopy experiments using light muonic atoms Open
Precision spectroscopy of light muonic atoms provides unique information about the atomic and nuclear structure of these systems and thus represents a way to access fundamental interactions, properties and constants. One application compri…