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The production of negative ions is of significant interest for applications including mass spectrometry, materials surface processing, and neutral beam injection for magnetic confined fusion. Neutral beam injection sources maximise negative…

We simulate ion loss induced by neutral beam injection (NBI) in three-dimensional (3D) space with high fidelity on the plasma-facing components (PFCs) of the Korea Superconducting Tokamak Advanced Research (KSTAR) device. Utilizing a 3D…

Plasma Physics · Physics 2025-03-17 Taeuk Moon , Tongnyeol Rhee , Jae-Min Kwon , Young-Mu Jeon , Eisung Yoon

Gas-based time projection chambers (TPCs) have been shown to be highly sensitive X-ray polarimeters having excellent quantum efficiency while at the same time achieving large modulation factors. To observe polarization of the prompt X-ray…

Instrumentation and Methods for Astrophysics · Physics 2013-08-06 Z. Prieskorn , J. E. Hill , P. E. Kaaret , J. K. Black , K. Jahoda

A complete model for estimating the electric conductivity of combustion product gases, with added cesium (Cs) or potassium (K) vapor for ionization, is presented. Neutral carrier gases serve as the bulk fluid that carries the seed material,…

Plasma Physics · Physics 2024-06-07 Osama A. Marzouk

Consorzio RFX and INFN-LNL have designed, built and operated the compact radiofrequency negative ion source NIO1 (Negative Ion Optimization phase 1) with the aim of studying the production and acceleration of H- ions. In particular, NIO1…

We demonstrate discrimination of ground-state hyperfine manifolds of a cesium atom in an optical tweezer using a simple probe beam with 99.91(2)% detection fidelity and 0.9(2)% detection-driven loss of bright state atoms. Our detection…

Quantum Physics · Physics 2024-07-11 Matthew N. H. Chow , Bethany J. Little , Yuan-Yu Jau

We discuss the prospects of exploring the neutrino mass parameters with a CERN based Beta-beam experiment using two different detectors at two different baselines. The proposed set-up consists of a 50 kton iron calorimeter (ICAL) at a…

High Energy Physics - Phenomenology · Physics 2009-04-14 Sanjib Kumar Agarwalla , Sandhya Choubey , Amitava Raychaudhuri

This manuscript presents a data-processing technique which improves the accuracy and precision of absorption-spectroscopy measurements by isolating the molecular absorbance signal from errors in the baseline light intensity (Io) using…

Instrumentation and Detectors · Physics 2020-09-24 Christopher S. Goldenstein , Garrett C. Mathews , Ryan K. Cole , Amanda S. Makowiecki , Gregory B. Rieker

Laser-plasma acceleration produces ultrashort, high-brightness ion beams reaching tens of MeV, yet their large divergence and broad energy spread require dedicated capture elements for beam transport. Using laser-accelerated protons from…

Accelerator Physics · Physics 2026-05-12 Daniel C. E. Dewitt , Oliver Boine-Frankenheim , Abel Blazevic

The European Spallation Source (ESS), currently under construction in Sweden, will provide an intense pulsed neutrino flux allowing for high-statistics measurements of coherent elastic neutrino-nucleus scattering (CE{\nu}NS) with advanced…

High Energy Physics - Phenomenology · Physics 2023-04-03 Sabya Sachi Chatterjee , Stéphane Lavignac , O. G. Miranda , G. Sanchez Garcia

We present measurements of radioactive contamination in the high-resistivity silicon charge-coupled devices (CCDs) used by the DAMIC experiment to search for dark matter particles. Novel analysis methods, which exploit the unique spatial…

Experimental apparatus and measurement technique are described for precision absorption measurements in sodium - noble gas mixtures. The absolute absorption coefficient is measured in the wavelength range from 425 nm to 760 nm with 2%…

Atomic Physics · Physics 2009-11-06 M. Shurgalin , W. H. Parkinson , K. Yoshino , C. Schoene , W. P. Lapatovich

Charged Particle Therapy is a technique for cancer treatment that exploits hadron beams, mostly protons and carbons. A critical issue is the monitoring of the dose released by the beam to the tumor and to the surrounding tissues. We present…

The compact radio frequency negative ion source NIO1 (Negative Ion Optimization phase 1) has been designed, built and operated by Consorzio RFX and INFN-LNL in order to study and optimize the production and acceleration of H- ions in…

Plasma Physics · Physics 2023-08-30 M. Barbisan , R. S. Delogu , A. Pimazzoni , C. Poggi , M. Ugoletti , M. Cavenago

Nanoscale focused ion beams (FIBs) represent one of the most useful tools in nanotechnology, enabling nanofabrication via milling and gas-assisted deposition, microscopy and microanalysis, and selective, spatially resolved doping of…

Atomic Physics · Physics 2021-06-09 J. J. McClelland , A. V. Steele , B. Knuffman , K. A. Twedt , A. Schwarzkopf , T. M. Wilson

In Chinese Spallation Neutron Source (CSNS), proton beam is used to hit metal tungsten target, and then high flux neutrons are generated for experiments on instruments. For neutron flux spectrum correction, boron-coated GEM, lithium glass…

Instrumentation and Detectors · Physics 2018-06-22 Jian Zhuang , Ke Zhou , Lijiang Liao , Lei Hu , Jiajie Li , Yongxiang Qiu

An efficient scheme of generating ultra-tightly focused proton bunch with radius in nanometer scale is proposed. A needlelike proton filament of transverse size in nanometer scale with the density of and charge quantity is obtained based on…

Accelerator Physics · Physics 2022-05-18 Q. Yu

Recently, neural networks have found many applications in different fields including Genetics, Pharmacy, Astrophysics and High Energy Physics [1-3]. In the field of accelerator physics it has been used for control systems [4]. In this paper…

Accelerator Physics · Physics 2018-07-31 N. Joshi , O. Meusel , H. Podlech

Neutron Resonance Transmission Analysis (NRTA) is a spectroscopic technique which uses the resonant absorption of neutrons in the epithermal range to infer the isotopic composition of an object. This spectroscopic technique has relevance in…

Instrumentation and Detectors · Physics 2021-05-19 Ethan A. Klein , Farheen Naqvi , Jacob E. Bickus , Hin Y. Lee , Robert J. Goldston , Areg Danagoulian