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The First Passage Time (FPT) is the time taken for a stochastic process to reach a desired threshold. In this letter we address the FPT of the stochastic measurement current in the case of continuously measured quantum systems. Our approach…

Quantum Physics · Physics 2024-08-08 Michael J. Kewming , Anthony Kiely , Steve Campbell , Gabriel T. Landi

We study resonance contrast by a two-step pulse observation method to enhance the frequency stability of coherent population trapping (CPT) atomic clocks. The proposed method is a two-step Raman--Ramsey scheme with low intensity during…

Atomic Physics · Physics 2017-03-08 Yuichiro Yano , Shigeyoshi Goka , Masatoshi Kajita

We report on building a pulsed source of cold Tm atoms and loading of the narrow-line magnito-optical trap (MOT) from the cold atomic beam. We achieve the loading rate of the first-stage MOT in the primary chamber up to $10^8$ atoms/s and…

Atomic Physics · Physics 2024-11-14 M. Yaushev , D. Mishin , D. Tregubov , N. Kolachevsky , A. Golovizin

Since May 2011 the AMS-02 experiment is installed on the International Space Station and is observing cosmic radiation. It consists of several state-of-the-art sub-detectors, which redundantly measure charge and energy of traversing…

Instrumentation and Methods for Astrophysics · Physics 2015-01-09 Andreas Obermeier , Michael Korsmeier

Thermoluminescence detectors (TLD) were used for dose measurements at JET. Several hundreds of LiF detectors of various types, standard LiF:Mg,Ti and highly sensitive LiF:Mg,Cu,P were produced. LiF detectors consisting of natural lithium…

Time-resolved electron dynamics in coupled quantum dots is directly observed by a pulsed-gate technique. While individual gate voltages are modulated with periodic pulse trains, average charge occupations are measured with a nearby quantum…

Mesoscale and Nanoscale Physics · Physics 2010-11-12 D. Harbusch , S. Manus , H. P. Tranitz , W. Wegscheider , S. Ludwig

The purpose of this study was to show how advanced concepts of compact, lossless and "Time Of Flight" (TOF) capable electronics similar to those foreseen for the LHC and ILC experiments could be fairly and easily transferred to the medical…

Instrumentation and Detectors · Physics 2009-08-03 P. -E. Vert , J. Lecoq , G. Montarou , N. Pauna , B. Joly , M. Boutemeur , H. Mathez , R. Gaglione , P. Le Dû

Proton computed tomography (CT) is similar to x-ray CT but relies on protons rather than photons to form an image. In its most common operation mode, the measured quantity is the amount of energy that a proton has lost while traversing the…

Medical Physics · Physics 2022-08-17 Nils Krah , Denis Dauvergne , Jean Michel Létang , Simon Rit , Étienne Testa

A novel detector based on a polycrystalline diamond sensor is here employed in an advanced Time-Of-Flight scheme for the characterization of energetic ions accelerated during laser-matter interactions. The optimization of the detector and…

We demonstrate that dynamical probes provide direct means of detecting the topological phase transition (TPT) between conventional and topological phases, which would otherwise be difficult to access because of loss or heating processes. We…

Quantum Gases · Physics 2015-11-06 F. Setiawan , K. Sengupta , I. B. Spielman , Jay D. Sau

We report on the neutron response of the LAMBDA spectrometer developed earlier for high-energy gamma-ray measurement. The energy dependent neutron detection efficiency of the spectrometer has been measured using the time-of-flight (TOF)…

Recent developments in high-power ultrafast optical technology and emerging theoretical frameworks in strong-field quantum electrodynamics (SF-QED) are unveiling nuanced differentiations between the semi-classical and full quantum…

Coincidence time resolution (CTR) in time-of-flight positron emission tomography (TOF-PET) has significantly improved with advancements in scintillators, photodetectors, and readout electronics. Achieving a CTR of 100 ps remains challenging…

Instrumentation and Detectors · Physics 2024-12-25 Yuya Onishi , Ryosuke Ota

Photomultiplier tube (PMT) voltage waveforms are the raw data of many neutrino and dark matter experiments. Waveform analysis is the cornerstone of data processing. We evaluate the performance of all the waveform analysis algorithms known…

Instrumentation and Detectors · Physics 2022-07-04 Dacheng Xu , Benda Xu , Erjin Bao , Yiyang Wu , Aiqiang Zhang , Yuyi Wang , Geliang Zhang , Yu Xu , Ziyi Guo , Jihui Pei , Hanyang Mao , Jiashuo Liu , Zhe Wang , Shaomin Chen

We propose a two-step pulse observation method to enhance frequency stability for coherent population trapping (CPT) atomic clocks. The proposed method is a Raman-Ramsey scheme with low light intensity at resonance observation, and provides…

Atomic Physics · Physics 2014-12-15 Yuichiro Yano , Shigeyoshi Goka , Masatoshi Kajita

The ATLAS Transition Radiation Tracker (TRT) is the outermost of the three sub-systems of the ATLAS Inner Detector at the Large Hadron Collider at CERN. In addition to its tracking capabilities, the TRT provides particle identification…

Instrumentation and Detectors · Physics 2019-08-13 E. Hines

A first-order MeV-scale cosmological phase transition (PT) can generate a peak in the power spectrum of stochastic gravitational wave background around nanohertz frequencies. With the recent International Pulsar Timing Array data release…

Cosmology and Nongalactic Astrophysics · Physics 2022-01-25 Deng Wang

Nowadays, in Positron Emission Tomography (PET) systems, a Time of Flight information is used to improve the image reconstruction process. In Time of Flight PET (TOF-PET), fast detectors are able to measure the difference in the arrival…

We have investigated a commercially available polymer for its suitability as a solid state nuclear track detector (SSNTD). We identified that polymer to be polyethylene terephthalate (PET) and found that it has a higher detection threshold…

Nuclear Experiment · Physics 2011-03-28 S. Dey , D. Gupta , A. Maulik , Sibaji Raha , Swapan K. Saha , D. Syam , J. Pakarinen , D. Voulot , F. Wenander