scholarly journals ESTIMATION OF BBU THRESHOLD CURRENT IN AN INHOMOGENEOUS ACCELERATING SECTION

2020 ◽  
pp. 86-91
Author(s):  
M.I. Ayzatsky ◽  
K.Yu. Kramarenko ◽  
V.V. Mytrochenko

In this work we describe the procedure of estimation of regenerative beam blowup threshold current in an inhomogeneous accelerating section. The self-consistent problem of transverse motion of particles in the field of dipole mode excited by the beam is solved. The distribution of dipole field near the structure axis and the energy variation of beam particles were calculated before simulating the transverse dynamics. The threshold current for S-band industrial linac designed for radiation sterilization of medical products is estimated.

2007 ◽  
Vol 73 (2) ◽  
pp. 241-256 ◽  
Author(s):  
N. MAZUR ◽  
E. FEDOROV ◽  
V. PILIPENKO ◽  
A. LEONOVICH

Abstract.The efficiency of the Alfvén impulse excitation in the auroral zone of the terrestrial magnetosphere upon the onset of the anomalous field-aligned resistance has been estimated. The impulsive disturbance excited during the onset of anomalous field-aligned resistance and electric field may signify the transition of a global magnetospheric instability into the explosive phase with positive feedback. We consider the self-consistent problem on excitation of anomalous resistance at the front of field-aligned current and reverse influence upon it from the induced currents. The analytical solution of the self-consistent problem has shown that during the entrance of field-aligned current front into the anomalous resistivity layer (ARL) an Alfvénic impulse is generated. The interaction of the external current with ARL results in the delay of the current growth. The impulse duration and delay time depend on the ratio between the Alfvén damping scale and external current width. The solution obtained indicates the possibility of using the Alfvénic impulse as an indicator of distant occurrence of anomalous resistance.


2021 ◽  
Vol 66 (4) ◽  
pp. 408-411
Author(s):  
A. S. Raevskii ◽  
S. B. Raevskii ◽  
A. Yu. Sedakov ◽  
A. A. Titarenko

2017 ◽  
Vol 43 (6) ◽  
pp. 577-580
Author(s):  
G. S. Malyshev ◽  
A. S. Raevskii ◽  
S. B. Raevskii

1987 ◽  
Vol 127 ◽  
pp. 495-496
Author(s):  
Herwig Dejonghe

Triaxial separable potentials V(λ, μ,ν) = fλ + fμ + fν ≥ 0, with admit three constants of the motion (see de Zeeuw 1985 for more details), for which we can take the following set: Here vλ, and vν are the velocity components in the (λ, μ,ν) coordinate system, and we recognize in E the binding energy per unit mass.


2012 ◽  
Vol 27 (08) ◽  
pp. 1250042 ◽  
Author(s):  
V. A. BEDNYAKOV ◽  
A. A. GRINYUK ◽  
G. I. LYKASOV ◽  
M. POGHOSYAN

Hadron inclusive spectra in pp collisions are analyzed within the modified quark–gluon string model including both the longitudinal and transverse motion of quarks in the proton in the wide region of initial energies. The self-consistent analysis shows that the experimental data on the inclusive spectra of light hadrons like pions and kaons at ISR energies can be satisfactorily described at transverse momenta not larger than 1–2 GeV /c. We discuss some difficulties to apply this model at energies above the ISR and suggest to include the distribution of gluons in the proton unintegrated over the internal transverse momentum. It leads to an increase in the inclusive spectra of hadrons and allows us to extend the satisfactory description of the data in the central rapidity region at energies higher than ISR.


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