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Approximate computing is being considered as a promising design paradigm to overcome the energy and performance challenges in computationally demanding applications. If the case where the accuracy can be configured, the quality level versus…

机器学习 · 计算机科学 2019-01-07 Shayan Tabatabaei Nikkhah , Mehdi Kamal , Ali Afzali-Kusha , Massoud Pedram

The use of existing linacs, and in particular light source injectors, for free-electron laser (FEL) experiments is becoming more common due to the desire to test FELs at ever shorter wavelengths. The high-brightness, high-current beams…

加速器物理 · 物理学 2008-11-26 G. Travish , S. Biedron , M. Borland , M. Hahne , K. Harkay , J. W. Lewellen , A. Lumpkin , S. Milton , N. Sereno

Accelerators produce too many signals for a small operations team to monitor in real time. In addition, many of these signals are only interpretable by subject matter experts with years of experience. As a result, changes in accelerator…

加速器物理 · 物理学 2022-12-28 Ryan Humble , Finn H. O'Shea , William Colocho , Matt Gibbs , Helen Chaffee , Eric Darve , Daniel Ratner

Beam loss is a critical issue in high-intensity accelerators, and much effort is expended during both the design and operation phases to minimize the loss and to keep it to manageable levels. As new accelerators become ever more powerful,…

加速器物理 · 物理学 2016-08-09 M. A. Plum

The development and production of radio frequency quadrupoles, which are used for accelerating low-energy ions to high energies, continues since 1970s. The development of RFQ design software packages, which can provide ease of use with a…

加速器物理 · 物理学 2016-03-22 B. Yasatekin , G. Turemen , E. Celebi , G. Unel , O. Cakir

In this article, we share our experience related to the new photo-injector commissioning at the SPARC\_LAB test facility. The new photo-injector was installed into an existing machine and our goal was not only to improve the final beam…

Reconfigurable reflectarray antennas (RRAs) have rapidly developed with various prototypes proposed in recent literatures. However, designing wideband, multiband, or high-frequency RRAs faces great challenges, especially the lengthy…

应用物理 · 物理学 2023-10-09 Changhao Liu , You Wu , Songlin Zhou , Fan Yang , Yongli Ren , Shenheng Xu , Maokun Li

Radio-frequency (RF) systems deliver the power to change the energy of a charged particle beam, and they are integral parts of linear and circular accelerators. A longitudinal electrical field in the direction of the beam is generated in a…

加速器物理 · 物理学 2022-01-20 Heiko Damerau

RF superconductivity has become a major subfield of accelerator science. There has been an explosion in the number of accelerator applications and in the number of laboratories engaged. The first lecture at this meeting of the CAS presented…

加速器物理 · 物理学 2015-01-29 H Padamsee

The RFQ design tool DEMIRCI aims to provide fast and accurate simulation of a light ion accelerating cavity and of the ion beam in it. It is a modern tool with a graphical user interface leading to a "point and click" method to help the…

加速器物理 · 物理学 2021-08-20 E. Celebi , G. Turemen , O. Cakir , G. Unel

The ever increasing demands placed upon machine performance have resulted in the need for more comprehensive particle accelerator modeling. Computer simulations are key to the success of particle accelerators. Many aspects of particle…

The high power RF system will be a significant budgetary driver for any future collider. An order-of-magnitude improvement in cost/capability is needed, and as a result, a robust R&D program in next-generation, economical RF sources is…

加速器物理 · 物理学 2022-03-31 Brandon Weatherford , Emilio A. Nanni , Sami Tantawi

The Fermilab Linac delivers 400 MeV H- beam to the rest of the accelerator chain. Providing stable intensity, energy, and emittance is key since it directly affects downstream machines. To counter fluctuations of Linac output due to various…

加速器物理 · 物理学 2022-09-07 R. Sharankova , M. Mwaniki , K. Seiya , M. Wesley

On-chip inductor design plays a critical role in the advancement of radio-frequency integrated circuits (RFICs). Inductors typically occupy a substantial portion of the chip area as their performance metrics, namely, inductance density and…

Implementing embedded neural network processing at the edge requires efficient hardware acceleration that couples high computational performance with low power consumption. Driven by the rapid evolution of network architectures and their…

硬件体系结构 · 计算机科学 2021-06-25 Petar Jokic , Erfan Azarkhish , Andrea Bonetti , Marc Pons , Stephane Emery , Luca Benini

Electron beams of linear induction accelerators experience deflective forces caused by RF fields building up as a result of accelerating cavities of finite size. These forces can significantly effect the beam when a long linac composed of…

加速器物理 · 物理学 2007-05-23 Scott D. Nelson , Michael Vella

Current research suggests the use of a liner quadratic performance index for optimal control of regulators in various applications. Some examples include correcting the trajectory of rocket and air vehicles, vibration suppression of…

综合数学 · 数学 2007-05-23 Alexander Bolonkin , Robert Sierakowski

The Peking University Integral Split Ring Radio Frequency Quadrupole(ISR RFQ) accelerator was constructed in 1999 with a high duty factor 16.7% and repetition frequency 166Hz, and it was able to accelerate N+, O+,O-, C+ and He+ from…

加速器物理 · 物理学 2010-11-29 Minglei Kang , Yuanrong Lu , Zhi Wang , Kun Zhu , Xueqing Yan , Shuli Gao , Shixiang Peng , Zhiyu Guo , Jiaxun Fang , Jiaer Chen

The proton irradiation accelerator is widely founded for industry application, and should be designed as compact, reliable, and easy operate. A 10 MeV proton beam is designed to be injected into the slow circulation ring with the repetition…

加速器物理 · 物理学 2014-11-24 Yu-Wen An , Hong-Fei Ji , Sheng Wang , Shou-Yan Xu

Modern accelerator front ends almost exclusively include radio-frequency quadrupoles for initial capture and focusing of the low-energy beam. Dynamics in the RFQ define the longitudinal bunch parameters. Simulation of the SNS RFQ with…

加速器物理 · 物理学 2021-01-04 K. Ruisard , A. Aleksandrov , S. Cousineau , A. Shishlo , V. Tzoganis , A. Zhukov