Results 261 to 270 of about 10,237 (295)

To bunch or to antibunch

Science, 2017
Optics Particles of matter can be classed as either as bosons or fermions. Their subsequent behavior in terms of their physical properties and interactions depends on which quantum statistics they obey. Photons, for instance, are bosons and tend to bunch. Electrons are fermions and tend to antibunch. Vest et al.
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Bunch-by-bunch beam lifetime measurement at SSRF

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2021
Abstract Lifetime is a key performance parameter of storage rings. DC current transformers (DCCT) are common employed to measure beam lifetime, which can only be applied to measure average lifetime. However, the physical lifetime formula is only strictly established for a single bunch.
Bo Gao, Fangzhou Chen, Yimei Zhou, Yongbin Leng   +3 more
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On bunched typing

Journal of Functional Programming, 2003
We study a typing scheme derived from a semantic situation where a single category possesses several closed structures, corresponding to different varieties of function type. In this scheme typing contexts are trees built from two (or more) binary combining operations, or in short, bunches ...
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Bunch-by-Bunch Feedback Kickers for SPEAR3

2017
SPEAR3 operates with a large cross-section copper vacuum chamber, mode-damped RF cavities and low-impedance insertion devices. As a result, the beam is passively stable for 280-bunch circulating beam current up to 500ma when the background gas pressure is low.
Tian, Kai, Corbett, Jeff, Fox, John, Gierman, Stephen, Hettel, Robert, Huang, Xiaobiao, Krasnykh, Anatoly, Kurita, Nadine, Lin, Qi, Martin, Donald, Safranek, James, Sebek, James, Teytelman, Dmitry   +12 more
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Superb Bunch-by-bunch Feedback R

2010
Proceedings of the 1st International Particle Accelerator Conference, IPAC2010, Kyoto ...
Drago, Alessandro, Beretta, Matteo, Bertsche, Kirk, Migliorati, Mauro, Novokhatski, Alexander   +4 more
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The Wild Bunch:

2019
Gérard Camy’s thesis is that the violence in The Wild Bunch expresses the director’s pessimistic view of unredeemed (and potentially unredeemable) human nature. The film’s shootouts—raw, seemingly unmediated—are indicative of a societal breakdown of not just restraint but norms.
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Design of a Ultrafast Stripline Kicker for Bunch-by-Bunch Feedback

2019
Lorentz force detuning and beam loading effect of the rf cavities will induce a slope of the cavity gradient. Combed with the cavity misalignments, transverse position of subsequent bunches will differ from each other. The CAEP THz Free Electron Laser facility(CTFEL) will have a fast transverse bunch-by-bunch feedback system on its test beamline, which
Wang, Jianxin, Li, Peng, Wu, Dai, Xiao, Dexin, Yan, Longgang   +4 more
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Bunch-by-bunch longitudinal phase monitor at SSRF

Nuclear Science and Techniques, 2018
Beam signals captured from a button-type pickup contain multidimensional information including the bunch charge, transverse position, bunch length, and longitudinal phase. A bunch phase monitor, which retrieves longitudinal phase information from a pickup signal at a bunch-by-bunch rate, has been developed at the Shanghai Synchrotron Radiation Facility.
Yi-Mei Zhou, Han-Jiao Chen, Shan-Shan Cao, Yong-Bin Leng   +3 more
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Bunch by bunch measurement at the HEPS by oscilloscope

By directly sampling the BPM signals with a high sampling rate oscilloscope, the bunch-by-bunch position and phase were calculated. With the help of injection trigger signal, oscilloscope was utilized to capture the injection process. The energy mismatch of the injection transient process and the residual oscillation of the injection bunch were studied.
He,Jun, Zhu,Dechong, Huang,Fangqi, Cao,Jian She, Yue,JunHui, Xu,Taoguang, Sui,Yanfeng, Zhao,Ying   +7 more
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Bunch-by-bunch Beam Current Monitor for HLS

2010
Proceedings of the 1st International Particle Accelerator Conference, IPAC2010, Kyoto ...
Ma, Tianji, Li, Chuan, Li, Wubin, Lu, Ping, Sun, Bao-Gen, Tang, Leilei, Yang, Yongliang   +6 more
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