Results 281 to 290 of about 2,421,794 (345)
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Beam-energy inequality in the beam-beam interaction
Physical Review D, 1990Conditions for energy transparency,'' unequal-energy beams having the same beam-beam behavior, are derived for round beams from a Hamiltonian model of the beam-beam interaction. These conditions are equal fractional betatron tunes, equal synchrotron tunes, equal beam-beam strength parameters, equal nominal sizes, equal {beta}{sup *}'s and equal bunch ...
, Krishnagopal, , Siemann
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Construction and Building Materials, 2017
In this study, the effectiveness and efficiency of two different techniques for strengthening of reinforced concrete (RC) beams using ultra-high performance fiber reinforced concrete (UHPFRC) was investigated i.e.; (i) by sand blasting RC beams surfaces ...
Mohammed Al-Osta +3 more
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In this study, the effectiveness and efficiency of two different techniques for strengthening of reinforced concrete (RC) beams using ultra-high performance fiber reinforced concrete (UHPFRC) was investigated i.e.; (i) by sand blasting RC beams surfaces ...
Mohammed Al-Osta +3 more
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Science Translational Medicine, 2015
Radiation therapy for prostate cancer can increase androgen receptor signaling and exacerbate the disease in some patients.
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Radiation therapy for prostate cancer can increase androgen receptor signaling and exacerbate the disease in some patients.
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Beam-beam Effect on the BTF in Bunched Beams
2014We present studies on the transverse baseband Beam Transfer Functions (BTFs) in bunched beams at high energies. The goal of the work is to evaluate whether transverse BTFs can be used to diagnose the tune spread arising from transverse nonlinearities such as the beam-beam effect and space charge.
Görgen, Paul +2 more
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Beam-Beam Instability in Case of Strong-Weak Beam-Beam Interactions
AIP Conference Proceedings, 2003Beam‐beam effects in HERA were studied with a self‐consistent beam‐beam simulation by using the particle‐in‐cell method. A remarkable agreement between the experimental measurement and the simulation result was observed on the emittance growth, luminosity reduction, and coherent beam‐beam tune shifts.
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2014
Beam–beam effects became a subject of study as soon as there were colliders beginning with the first e+e− collider AdA in Frascati that started operating in 1962 and the first p–p collider ISR at CERN that started operating in 1971. Over the years many different issues related to electromagnetic interactions of colliding beams have emerged.
V. Shiltsev, A. Valishev
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Beam–beam effects became a subject of study as soon as there were colliders beginning with the first e+e− collider AdA in Frascati that started operating in 1962 and the first p–p collider ISR at CERN that started operating in 1971. Over the years many different issues related to electromagnetic interactions of colliding beams have emerged.
V. Shiltsev, A. Valishev
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AIP Conference Proceedings, 1985
The subject of beam-beam instability has been studied since the invention of the colliding beam storage rings. Today, with several colliding beam storage rings in operation, it is not yet fully understood and remains an outstanding problem for the storage ring designers.
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The subject of beam-beam instability has been studied since the invention of the colliding beam storage rings. Today, with several colliding beam storage rings in operation, it is not yet fully understood and remains an outstanding problem for the storage ring designers.
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Importance of beam-beam tune spread to collective beam-beam instability in hadron colliders
Physical Review E, 2004In hadron colliders, electron-beam compensation of beam-beam tune spread has been explored for a reduction of beam-beam effects. In this paper, effects of the tune-spread compensation on beam-beam instabilities were studied with a self-consistent beam-beam simulation in model lattices of Tevatron and Large Hodron Collider.
Lihui, Jin, Jicong, Shi
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Beam-beam simulation with non-Gaussian beams
AIP Conference Proceedings, 1990A new method of calculating the beam‐beam force for High Energy Colliding Beam Machines is given and the method does not assume that the particle distribution is gaussian. With the method, the coherent beam‐beam tune shift as a function of beam current is reproduced for the horizontal case. (AIP)
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Beam-based beam-beam benchmarking and correction
Optics studies in the LHC are generally performed on low-intensity, non-colliding beams. Understanding the optics perturbation from beam-beam effects however, is of significant interest. This was particularly true for the LHC in 2024, where the 3Qy resonance driven by the long-range beam-beam (LRBB) contributed to breaking of the collimator hierarchy ...Maclean,Ewen +6 more
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