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In this paper the Stimulated radiation cooling (SRC) of ion beams and methods of formation of the broadband laser beams with given spectral distribution are discussed.

Accelerator Physics · Physics 2008-09-10 E. G. Bessonov , R. M. Feshchenko

The energy distribution of an ultracold rubidium ion beam, which is intended to be used as the source for a focused ion beam instrument, is measured with a retarding field analyzer. The ions are created from a laser-cooled and compressed…

We measured a considerable increase of the emitted radiation by 120 GeV/c electrons in an axially oriented lead tungstate scintillator crystal, if compared to the case in which the sample was not aligned with the beam direction. This…

We consider the process of cooling of a heavy particle beam in a co-moving electron beam of low temperature guided by a solenoidal magnetic field. This paper summarizes the main results of theoretical studies of this process conducted by…

Accelerator Physics · Physics 2017-06-02 Yaroslav S. Derbenev

The interest in using the radiation detectors based on high resistive chromium-compensated GaAs (GaAs:Cr) in high energy physics and others applied fields has been growing steadily due to its numerous advantages over others classical…

We have performed a detailed experimental study of resistive cooling of large ensembles of highly charged ions such as Ar$^{13+}$ in a cryogenic Penning trap. Different from the measurements reported in [M. Vogel et al., Phys. Rev. A,…

Atomic Physics · Physics 2018-09-25 M. S. Ebrahimi , Z. Guo , M. Vogel , M. Wiesel , G. Birkl , W. Quint

A room temperature heavy ion linac has been proposed as a new injector of CSRm (the main Cooler Storage Ring) at HIRFL (Heavy Ion Research Facility in Lanzhou), which is expected to improve the performance of HIRFL. The linac injector can…

Accelerator Physics · Physics 2015-06-17 Xiaohu Zhang , Youjin Yuan , Jiawen Xia , Xuejun Yin , Dayu Yin , Xiaoni Li , Xiucui Xie , Heng Du , zhongshan Li

Cooling of hadron beams (including heavy-ions) is a powerful technique by which accelerator facilities around the world achieve the necessary beam brightness for their physics research. In this paper, we will give an overview of the latest…

Accelerator Physics · Physics 2009-09-29 L. R. Prost , P. Derwent

In the innermost regions of low-luminosity accretion flows, including Sgr A* at the center of our Galaxy, the frequency of Coulomb collisions is so low that the plasma is two-temperature, with the ions substantially hotter than the…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Lorenzo Sironi

The Electron-Ion-Collider (EIC) will be a next-generation facility located at Brookhaven National Laboratory (BNL), built with the goal of accelerating heavy ions up to 275 GeV. To prevent ion beam size growth during the acceleration phase,…

Accelerator Physics · Physics 2023-09-29 Stephen J. Coleman , David L. Bruhwiler , Dan T. Abell , Boaz Nash , Ilya Pogorelov , He Zhang

Dense arrays of trapped ions provide one way of scaling up ion trap quantum information processing. However, miniaturization of ion traps is currently limited by sharply increasing motional state decoherence at sub-100 um ion-electrode…

A new accelerator complex, HIAF (the High Intensity Heavy Ion Accelerator Facility), has been approved in China. It is designed to provide intense primary and radioactive ion beams for research in high energy density physics, nuclear…

We have generated Coulomb crystals of ultracold $^4$He$^+$ ions in a linear radiofrequency trap, by sympathetic cooling via laser--cooled $^9$Be$^+$. Stable crystals containing up to 150 localized He$^+$ ions at $\sim$20 mK were obtained.…

Atomic Physics · Physics 2016-08-16 B. Roth , U. Fröhlich , S. Schiller

The development of a high intensity negative ion source is part of a considerably larger activity presently undergoing at CEA Saclay in the field of high intensity linear accelerators. Preliminary studies toward the construction of a 2.45…

Accelerator Physics · Physics 2007-05-23 R. Gobin , P-Y. Beauvais , O. Delferriere , R. Ferdinand , F. Harrault , J-M. Lagniel

Effect of He ion irradiation on three model Fe(100-x)Cr(x) alloys (x =5.8, 10.75 and 15.15) was investigated with the conversion electron M\"ossbauer spectroscopy. The study of the alloys irradiated with 25 keV ions revealed that the…

Materials Science · Physics 2014-11-21 S. M. Dubiel , J. Cieslak , H. Reuther

We review recent experimental and theoretical progress made in the scope of swift highly charged ion channelling in crystals. The usefulness of such studies is their ability to yield impact parameter information on charge transfer…

Atomic Physics · Physics 2009-07-23 D. Dauvergne

The half-size prototype of the multi wire drift chamber (MWDC) for the cooling storage ring (CSR) external-target experiment (CEE) was assembled and tested in 350 MeV/u Kr+Fe reactions on the heavy ion research facility in Lanzhou (HIRFL).…

In the context of the evaluation of possibly using the Fermilab Electron Cooler for the proposed low-energy RHIC run at BNL, operating the cooler at 1.6 MeV electron beam energy was tested in a short beam line configuration. The main…

Accelerator Physics · Physics 2012-09-13 L. R. Prost , A. Shemyakin , A. Fedotov , J. Kewisch

Increasing the luminosity of relativistic hadron beams is critical for the advancement of nuclear physics. Coherent electron cooling (CEC) promises to cool such beams significantly faster than alternative methods. We present simulations of…