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The barrel region of the CMS pixel detector will be equipped with ``n-in-n'' type silicon sensors. They are processed on DOFZ material, use the moderated p-spray technique and feature a bias grid. The latter leads to a small fraction of the…

XMM-Newton was launched into space on a highly eccentric 48 hour orbit on December 10th 1999. XMM-Newton is now in its fifth year of operation and has been an outstanding success, observing the Cosmos with imaging, spectroscopy and timing…

天体物理学 · 物理学 2009-11-10 S. Sembay , A. Abbey , B. Altieri , R. Ambrosi , D. Baskill , P. Ferrando , K. Mukerjee , A. Read , M. J. L. Turner

Photon-number resolved detection with superconducting nanowire single-photon detectors (SNSPDs) attracts increasing interest, but lacks a systematic framework for interpreting and benchmarking this capability. In this work, we combine…

We analyze the performance of photon-number-resolving (PNR) detectors and introduce a figure of merit for the accuracy of such detectors. This figure of merit is the (worst-case) probability that the photon-number-resolving detector…

量子物理 · 物理学 2019-04-24 Mattias Jönsson , Gunnar Björk

The XMM-OM instrument extends the spectral coverage of the XMM-Newton observatory into the ultraviolet and optical range. It provides imaging and time-resolved data on targets simultaneously with observations in the EPIC and RGS. It also…

A new computational model for the description of the photon detector response functions measured in conditions of low light is presented, together with examples of the observed photomultiplier signal amplitude distributions, successfully…

仪器与探测器 · 物理学 2018-03-14 Pavel Degtiarenko

The X-ray emission of neutron stars enables a probe of their temperatures, geometries, and magnetospheric properties. The current number of X-ray emitting pulsars is insufficient to rule out observational biases that may arise from poorly…

高能天体物理现象 · 物理学 2022-02-09 Armin Vahdat , Bettina Posselt , Andrea Santangelo , George G. Pavlov

I describe a method for synthesizing photometric passbands for use with current and future X-ray instruments. The method permits the standardisation of X-ray passbands and thus X-ray photometry between different instruments and missions.…

天体物理仪器与方法 · 物理学 2015-08-06 M. J. Page

Interdependencies between experimental spectra, representing line or plane projections of electronic densities, are derived from their consistency and symmetry conditions. Some additional relations for plane projections are obtained by…

数据分析、统计与概率 · 物理学 2009-11-07 G. Kontrym-Sznajd

Resonant soft X-ray Raman scattering measurements on NiO have been made at photon energies across the Ni 2p absorption edges. The details of the spectral features are identified as Raman scattering due to d-d and charge-transfer…

材料科学 · 物理学 2012-01-04 M. Magnuson , S. M. Butorin , A. Agui , J. Nordgren

With increasing interest in high-speed imaging should come an increased interest in the response times of our scanning transmission electron microscope (STEM) detectors. Previous works have previously highlighted and contrasted performance…

Cosmic-Ray Neutron Sensing (CRNS) is a novel technique for determining environmental water content by measuring albedo neutrons in the epithermal to fast energy range with moderated neutron detectors. We have investigated the response…

仪器与探测器 · 物理学 2018-08-01 M. Köhli , M. Schrön , U. Schmidt

We present an experimental realization of a 16 element, temporal-array, photon-number-resolving (PNR) detector, which is a multiplexed single-photon detector that splits an input signal over multiple time-bins, and the time-bins are…

量子物理 · 物理学 2020-11-25 Mattias Jönsson , Marcin Swillo , Samuel Gyger , Val Zwiller , Gunnar Björk

The Swift X-ray Telescope (XRT) focal plane camera is a front-illuminated MOS CCD, providing a spectral response kernel of 144 eV FWHM at 6.5 keV. We describe the CCD calibration program based on celestial and on-board calibration sources,…

The paper reviews recent progress in photodetectors, discussing vacuum-based detectors, semiconductor sensors, and gas-based detectors. The emphasis in this review is on the detection of low light levels, enhanced timing resolution, and…

仪器与探测器 · 物理学 2024-01-12 Peter Krizan

A vectorial analysis of magnetic resonance spectrometers, based on traveling wave resonators and including the reference arm and the automatic control of frequency, has been developed. The proposed model, valid also for stationary wave…

仪器与探测器 · 物理学 2015-06-26 G. Annino , M. Cassettari , M. Fittipaldi , M. Martinelli

The past two decades have witnessed the rapid growth of our knowledge of the X-ray Universe thanks to flagship X-ray space observatories like XMM-Newton and Chandra. A significant portion of discoveries would have been impossible without…

高能天体物理现象 · 物理学 2023-07-06 Junjie Mao , Frits Paerels , Matteo Guainazzi , Jelle S. Kaastra

We present the two kinds of experimental results. One is a continuous variable dense coding experiment, and the other is a photon number detector with high linearity response, the so called charge integration photon detector (CIPD). They…

量子物理 · 物理学 2007-05-23 M. Sasaki , K. Wakui , J. Mizuno , M. Fujiwara , M. Akiba

Photon imaging for MeV gammas has serious difficulties due to huge backgrounds and unclearness in images, which are originated from incompleteness in determining the physical parameters of Compton scattering in detection, e.g., lack of the…