Very low output-impedance RF system for a proton synchrotron with low drive power requirements

1999 ◽  
Vol 46 (5) ◽  
pp. 1289-1293 ◽  
Author(s):  
Y. Irie ◽  
S. Takano
Keyword(s):  
Proton Synchrotron ◽  
Output Impedance ◽  
Drive Power ◽  
Rf System

Mitigation of intensity limitation in the CERN SPS using a double RF system

2019 ◽  
Vol 34 (36) ◽  
pp. 1942036
Author(s):  
J. Repond ◽  
M. Schwarz ◽  
E. Shaposhnikova
Keyword(s):  
Hadron Collider ◽  
Mitigation Measures ◽  
Bunch Length ◽  
Proton Synchrotron ◽  
Intensity Increase ◽  
Super Proton Synchrotron ◽  
Rf System ◽  
Rf Systems ◽  
Voltage Ratio ◽  
Beam Stability

The Super Proton Synchrotron (SPS) at CERN is the injector of the Large Hadron Collider (LHC). Multi-bunch instabilities limit the intensity of the beam that can be accelerated to 450 GeV in the SPS and transferred to the LHC. Without mitigation measures, the threshold of bunch intensity of the longitudinal instability is three times below the nominal bunch intensity of the LHC beam. The High Luminosity LHC project (HL-LHC), which requires a doubling of the nominal bunch intensity, relies on improvement of beam stability in the SPS. A fourth harmonic RF system allows, presently, to stabilize the beam up to nominal LHC intensity. It increases the synchrotron frequency spread inside the bunch, providing more efficient Landau damping of beam instability. However, nonlinearities of the synchrotron frequency distribution inside the bunch pose a limitation on bunch length. This paper explores possible intensity increase in the SPS by studying the effect on beam stability of the voltage ratio between two RF systems. The results are substantiated by beam measurements and particle-tracking simulations. An optimized voltage program of the second RF system during the cycle has been tested in operation and beam stability and the quality have been successfully improved.

scholarly journals Present Status of RF System for Medical Proton Synchrotron

2006 ◽  
Author(s):  
Z. Fang ◽  
K. Endo ◽  
K. Egawa ◽  
S. Yamanaka ◽  
T. Hirashima ◽  
...  
Keyword(s):  
Present Status ◽  
Proton Synchrotron ◽  
Rf System

A Study on Loop Gain Measurement Method Using Output Impedance in DC-DC Buck Converter

2018 ◽  
Vol E101.B (9) ◽  
pp. 1940-1948 ◽  
Author(s):  
Nobukazu TSUKIJI ◽  
Yasunori KOBORI ◽  
Haruo KOBAYASHI
Keyword(s):  
Measurement Method ◽  
Buck Converter ◽  
Loop Gain ◽  
Output Impedance ◽  
Gain Measurement

Investigation of the effect of the constructive and mode parametres of a combined rocker on the power of the drive of the working bodies

2019 ◽  
pp. 82-85
Author(s):  
Pavel Ivanovich Pavlov ◽  
Viktor Vladislavovich Korsak ◽  
Aleksandr Olegovich Vezirov ◽  
Dmitriy Vadimovich Mukhin
Keyword(s):  
Operating Parameters ◽  
Regression Equations ◽  
Drive Power ◽  
Minimum Value ◽  
Working Bodies

The regression equations and graphical dependencies are obtained, which describe the influence of design and operating parameters on the drive power of the working bodies. The value of the design and operating parameters in which the power required to drive the working bodies, will have a minimum value  are experimentally determined.

Hybrid FSO/RF System Using Intelligent Power Control and Link Switching

2021 ◽  
pp. 1-1
Author(s):  
Song Song ◽  
Yejun Liu ◽  
Tianming Xu ◽  
Lei Guo
Keyword(s):  
Power Control ◽  
Rf System
Sign in / Sign up

Export Citation Format

Share Document