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Bent crystal was extracting 70-GeV protons with average intensity 4*10^11 (as measured in external beamline) per spill of 1.6 s duration, in parallel to the simultaneous work of two internal targets in the accelerator ring. An additional…

Positron acceleration in plasma wakefield faces significant challenges since the positron beam must be pre-generated and precisely coupled into the wakefield, and most critically, suffers from defocusing issues. Here we propose a scheme…

The K130 Room Temperature Cyclotron (RTC) at the Variable Energy Cyclotron Centre (VECC), Kolkata has delivered a variety of ion beams for experimental programs with stable performance since the 1970s. The extracted beams are transported to…

Accelerator Physics · Physics 2026-03-30 Arup Ratan Jana , Animesh Goswami , Malay Kanti Dey

We report the use of an electrostatic MEMS-based device to produce high quality electron vortex beams with more than 1000 quanta of orbital angular momentum (OAM). Diffraction and off-axis electron holography experiments are used to show…

A system for online measurement of the transverse beam emittance was developed. It is named $^{4}$PrOB$\varepsilon$aM (4-Profiler Online Beam Emittance Measurement) and was conceived to measure the emittance in a fast and efficient way…

Accelerator Physics · Physics 2018-03-22 K. P. Nesteruk , M. Auger , S. Braccini , T. S. Carzaniga , A. Ereditato , P. Scampoli

Fast procedures for the beam quality assessment and for the monitoring of beam energy modulations during the irradiation are among the most urgent improvements in particle therapy. Indeed, the online measurement of the particle beam energy…

Structured light beams, such as optical vortices carrying orbital angular momentum, are essential for applications ranging from low-power optical communications to high-intensity laser-matter interactions. However, scaling their power and…

Optics · Physics 2025-12-29 Hossein Fathi , Rafael F. Barros , Regina Gumenyuk

Beta Beams could address the needs of long term neutrino oscillation experiments. They can produce extremely pure neutrino beams through the decays of relativistic radioactive ions. The baseline scenario is described, together with its…

High Energy Physics - Experiment · Physics 2009-11-10 M. Mezzetto

FLASH radiation therapy calls for the delivery of fast bursted spills of particles with dose delivery times of the order of milliseconds. The requirements overlap with fundamental physics experimental requests that are being studied at…

Accelerator Physics · Physics 2022-08-31 Pablo A. Arrutia Sota , Philip N. Burrows , Matthew A. Fraser , Francesco M. Velotti

A Multi Megawatt Cyclotron complex able to accelerate H2+ to 800 MeV/amu is under study. It consists of an injector cyclotron able to accelerate the injected beam up to 50 MeV/n and of a booster ring made of 8 magnetic sectors and 8 RF…

Instrumentation and Detectors · Physics 2010-10-08 L. Calabretta , M. Maggiore , L. A. C. Piazza , D. Rifuggiato , A. Calanna

Our proposed ion acceleration scheme, micronozzle acceleration (MNA), generates proton beams with extremely high kinetic energies on the giga-electron-volt (GeV) order. The underlying physics and performance of MNA are studied with…

Plasma Physics · Physics 2025-12-02 M. Murakami , D. Balusu , S. Maruyama , Y. Murakami , B. Ramakrishna

The use of superconductivity is well-known as a method to increase the average field of a cyclotron and thereby to allow a substantial reduction of its size and mass. We present a compact high-field design for the first superconducting…

Accelerator Physics · Physics 2019-06-19 Jacob Kelly , Hywel Owen , Timothy A. Antaya , Chris Jones , Paul Ruggiero

Particle beams focused to micrometer-sized spots play a crucial role in forefront research using low-energy positrons. Their expedient and wide application, however, requires highly-resolved, fast beam diagnostics. We have developed two…

In the DAE{\delta}ALUS (Decay-At-rest Experiment for {\delta}CP studies At the Laboratory for Underground Science) project, high power H+2 cyclotron chains are proposed to efficiently provide proton beams with a kinetic energy of 800 MeV…

Accelerator Physics · Physics 2015-06-11 J. J. Yang , A. Adelmann , W. Barletta , L. Calabretta , J. M. Conrad

Use of electron vortex beams (EVB), that is convergent electron beams carrying an orbital angular momentum (OAM), is a novel development in the field of transmission electron microscopy. They should allow measurement of element-specific…

Materials Science · Physics 2015-06-19 Jan Rusz , Somnath Bhowmick , Mattias Eriksson , Nikolaj Karlsson

Presently large efforts are conducted towards the development of highly brilliant gamma beams via Compton back scattering of photons from a high-brilliance electron beam, either on the basis of a normal-conducting electron linac or a…

Nuclear Experiment · Physics 2015-05-27 C. Hugenschmidt , K. Schreckenbach , D. Habs , P. G. Thirolf

A design study has been performed for a positron beam with an energy of 500 MeV to be realized at the applied physics area of the Mainz Microtron MAMI. Positrons will be created after pair conversion of bremsstrahlung, produced by the 855…

Accelerator Physics · Physics 2022-09-14 H. Backe , W. Lauth , P. Drexler , P. Heil , P. Klag , B. Ledroit , F. Stieler

Compact laser-plasma acceleration of fast ions has made great strides since its discovery over two decades ago, resulting in the current generation of high-energy ($\geq 100\,\rm MeV$) ultracold beams over ultrashort ($\leq 1\,\rm ps$)…

For modern high-intensity linear accelerators, the well-known envelope instability and recently reported fourth-order particle resonance impose a fundamental operational limit (i.e., zero-current phase advance should be less than 90 deg).…

Accelerator Physics · Physics 2021-08-18 Yoo-Lim Cheon , Seok-Ho Moon , Moses Chung , Dong-O Jeon

In recent years, the possibility of direct production of the 99mTc isotope (bypassing the parent 99Mo stage) for medical purposes using nuclear reactions on charged particle beams has been actively discussed around the world [1,2]. At A.I.…

Medical Physics · Physics 2020-10-27 A. Avetisyan , R. Dallakyan , N. Dobrovolski , A. Manukyan , A. Melkonyan , I. Sinenko