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The 14N/15N ratio in molecules exhibits a large variation in star-forming regions, especially when measured from N2H+ isotopologues. However, there are only a few studies performed at high-angular resolution. We present the first…

Astrophysics of Galaxies · Physics 2021-03-31 F. Fontani , A. T. Barnes , P. Caselli , J. D. Henshaw , G. Cosentino , I. Jiménez-Serra , J. C. Tan , J. E. Pineda , C. Y. Law

Large surveys using modern telescopes are producing images that are increasing exponentially in size and quality. Identifying objects in the generated images by visual recognition is time-consuming and labor-intensive, while classifying the…

Instrumentation and Methods for Astrophysics · Physics 2021-09-28 Baoqiang Lao , Tao An , Ailing Wang , Zhijun Xu , Shaoguang Guo , Weijia Lv , Xiaocong Wu , Yingkang Zhang

Lynds dark cloud LDN1622 represents one of the best examples of anomalous dust emission, possibly originating from small spinning dust grains. We present Cosmic Background Imager (CBI) 31 GHz data of LDN1621, a diffuse dark cloud to the…

Silicon detectors based on the HV-CMOS technology are being investigated as possible candidate for the outer layers of the ATLAS pixel detector for the High Luminosity LHC. In this framework the H35Demo ASIC has been produced in the 350 nm…

The Migdal effect has received much attention from the dark matter direct detection community, in particular due to its power in setting limits on sub-GeV particle dark matter. Currently, there is no experimental confirmation of the Migdal…

High Energy Physics - Phenomenology · Physics 2023-03-24 Duncan Adams , Daniel Baxter , Hannah Day , Rouven Essig , Yonatan Kahn

In this paper we present the measurement of the response of 50 $\mu$m thin diamond detectors to 14 MeV neutrons. Such neutrons are produced in fusion reactors and are of particular interest for ITER neutron diagnostics. Among semiconductor…

Instrumentation and Detectors · Physics 2016-03-23 M. Osipenko , M. Ripani , G. Ricco , B. Caiffi , F. Pompili , M. Pillon , G. Verona-Rinati , R. Cardarelli

Understanding dark energy requires precision measurements of the expansion history of the universe and the growth of large-scale structure. The 21 cm intensity mapping (21 cm IM) technique enables rapid large-area surveys that can deliver…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-25 Jun-Da Pan , Yichao Li , Guo-Hong Du , Tian-Nuo Li , Xin Zhang

The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey is a new survey of Galactic 13CO (1-0) emission. The survey used the SEQUOIA multi pixel array on the Five College Radio Astronomy Observatory 14 m…

Foreground radio sources are a major contaminant for centimetre-wave cosmic microwave background (CMB) measurements and the 9C survey was set up as part of the observing strategy of the CMB telescope, the Very Small Array. Prior to this…

Astrophysics · Physics 2007-05-23 E. M. Waldram , G. G. Pooley

Since the discovery of electrons, an accurate detection of electrical charges has been the dream of scientific community. Due to some remarkable advantages, micro/nano-electromechanical systems (M/NEMS) based resonators have been used to…

Mesoscale and Nanoscale Physics · Physics 2019-07-22 Xuefeng Wang , Dong Pu , Ronghua Huan , Xueyong Wei , Weiqiu Zhu

Small-diameter muon drift tube (sMDT) detectors have been developed for upgrades of the ATLAS muon spectrometer. With a tube diameter of 15 mm, they provide an about an order of magnitude higher rate capability than the present ATLAS muon…

Instrumentation and Detectors · Physics 2017-06-28 H. Kroha , R. Fakhrutdinov , O. Kortner , A. Kozhin , K. Schmidt-Sommerfeld , E. Takasugi

X-ray Hybrid CMOS Detectors (HCDs) have advantages over X-ray CCDs due to their higher readout rate abilities, flexible readout, inherent radiation hardness, and low power, which make them more suitable for the next generation large area…

We investigate the prospect of constraining scalar field dark energy models using HI 21-cm intensity mapping surveys. We consider a wide class of coupled scalar field dark energy models whose predictions about the background cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2016-09-21 Azam Hussain , Shruti Thakur , Tapomoy Guha Sarkar , Anjan A Sen

The aim of the Cryogenic wide-Area Light Detectors with Excellent Resolution (CALDER) project is the development of light detectors with active area of $5\times5$ cm$^2$ and noise energy resolution smaller than 20 eV RMS, implementing…

Microwave reflectance probed photoconductivity (or $\mu$-PCD) measurement represents a contactless and non-invasive method to characterize impurity content in semiconductors. Major drawbacks of the method include a difficult separation of…

Applied Physics · Physics 2019-12-18 B. Gyüre-Garami , B. Blum , O. Sági , A. Bojtor , S. Kollarics , G. Csősz , B. G. Márkus , J. Volk , F. Simon

A CdTe double-sided strip detector (CdTe-DSD) is an ideal device for imaging and spectroscopic measure- ments in the hard X-ray range above 10 keV. Recent development enables us to realize an imager with a detection area of ~10 cm${^2}$. An…

The extremely low dark current of silicon carbide (SiC) detectors, even after high-fluence irradiation, was utilized to develop a beam monitoring system for a wide range of particle rates, i.e., from the kHz to the GHz regime. The system is…

Instrumentation and Detectors · Physics 2024-03-20 Simon Waid , Andreas Gsponer , Jürgen Maier , Philipp Gaggl , Richard Thalmeier , Thomas Bergauer

A new gas detector prototype for the upgrade of the focal plane detector of the MAGNEX large-acceptance magnetic spectrometer has been developed and tested in view of the NUMEN project. It has been designed to operate at low gas pressure…

This paper reports on the design optimization done for Double Sided silicon microStrip Detectors(DSSDs) to reduce the Equivalent Noise Charge (ENC) and to maximize the breakdown voltage and Charge Collection Efficiency. Various isolation…

Instrumentation and Detectors · Physics 2015-06-12 S. Chatterji , M. Singla , W. F. J. Mueller , J. M. Heuser

Great advances have been made in the study of ultra-high energy cosmic rays (UHECR) in the past two decades. These include the discovery of the spectral cut-off near 5 x 10^19 eV and complex structure at lower energies, as well as…

High Energy Astrophysical Phenomena · Physics 2017-04-05 B. R. Dawson , M. Fukushima , P. Sokolsky