A Cosmic Ray Muon Spectrometer Using Pressurized Gaseous Cherenkov Radiators

Bae, Junghyun; Chatzidakis, Stylianos

doi:10.1109/nss/mic44867.2021.9875534

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…In order to fit the observed counts, the muon flux can be estimated roughly with a cosine law of the form I(θ) = I 0 cos 2 (θ) as shown by Bae, et al [53]. However, here we require a more detailed Here, I(θ) is the muon flux intensity, incident on the differential area dA, over the solid angle dΩ, over a time dt.…”

Section: Angular Dependence Of Cosmic Muon Fluxmentioning

confidence: 99%

Cosmic muon flux attenuation methods for superconducting qubit experiments

Bertoldo¹,

Martínez²,

Nedyalkov³

et al. 2023

Preprint

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We propose and demonstrate two mitigation methods to attenuate the cosmic muon flux compatible with experiments involving superconducting qubits. Using a specifically-built cosmic muon detector, we find that chips oriented towards the horizon compared to chips looking at the sky overhead experience a decrease of a factor 1.6 of muon counts at the surface. Then, we identify shielded shallow underground sites, ubiquitous in urban environments, where significant additional attenuation, up to a factor 35 for 100-meter depths, can be attained. The two methods here described are the first proposed to directly reduce the effects from cosmic rays on qubits by attenuating the noise source, complementing existing on-chip mitigation strategies. We expect that both on-chip and off-chip methods combined will become ubiquitous in quantum technologies based on superconducting qubit circuits.

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Section: Angular Dependence Of Cosmic Muon Fluxmentioning

confidence: 99%

Cosmic muon flux attenuation methods for superconducting qubit experiments

Bertoldo¹,

Martínez²,

Nedyalkov³

et al. 2023

Preprint

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“…Since it is not practicable to deploy accelerators in the field to provide muon beams, it is important to measure muon momentum to maximize the utilizability of each cosmic ray muon. However, it is still challenging to measure muon momentum in the field without resorting to large solenoid or toroid magnets, or other specialized instruments, e.g., Cherenkov ring imagers, or time-of-flight detectors [27][28][29]. At present, no portable detector exists that can measure muon momentum in the field.…”

Section: Muon Spectrometersmentioning

confidence: 99%

Advances in Cosmic Ray Muon Computed Tomography and Fieldable Spectroscopy

Chatzidakis

Bae

2022

hnps

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A recent example of successful technology transition from high energy physics to practical engineering applications is cosmic ray muon tomography. Cosmic ray muon tomography, is a promising non-destructive technique that has been recently utilized to monitor or image the contents of dense or well shielded objects, typically not feasible with conventional radiography techniques, e.g., x-ray or neutron. Cosmic ray muon tomography has been used with various levels of success in spent nuclear fuel monitoring, volcano imaging, and cargo container imaging. Further, knowledge of cosmic ray muon momentum spectrum has the potential to significantly improve and expand the use of a variety of recently developed muon-based radiographic techniques. However, existing muon tomography systems rely only on muon tracking and have no momentum measurement capabilities which reduces the image resolution and requires longer measurement times. A fieldable cosmic ray muon spectrometer with momentum measurement capabilities for use in muon tomography is currently missing. In this paper, we will discuss and explore recent advances in cosmic ray muon computed tomography and spectroscopy and their applications to engineering including a new concept for measuring muon momentum using multiple gaseous Cherenkov radiators. By varying the pressure of multiple gas Cherenkov radiators, a set of muon momentum threshold levels can be selected that are triggered only when the incoming muon momentum exceeds that level. As a result, depending on the incoming muon momentum, none to all Cherenkov radiators can be triggered. By analyzing the signals from each radiator, we can estimate the actual muon momentum.

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