COOL2015 - List of Keywords (controls)

Paper	Title	Other Keywords	Page
TUYAUD03	Formation of Bunched Electron Beam at the Electron Cooler of CSRm	electron, ion, gun, cathode	85
	X.D. Yang, J. Li, X.M. Ma, L.J. Mao, M.T. Tang, T.L. Yan IMP/CAS, Lanzhou, People's Republic of China
	The motivation for formation of bunched electron beam at the electron cooler of CSRm is based on the three requirements. Firstly, the high energy electron cooling, especially, the ion beam with TeV energy, the bunched electron beam for cooling would be easier than the DC operating mode. Secondly, the electric field induced by the intensity modulated electron beam will be used for the suppression of instability developed in the high intensity ion beam after accumulation with the help of electron cooling, Thirdly, the electron beam was required to turn on and off in the different period of the atomic physics experiments. Some initial design and consideration were presented in this paper. And also the current situation and condition of CSRm electron cooler were described here. An off-line testbench will be established in the laboratory, and the test and the optimization will be explored in this experimentation. The validity of this system will be verified in the near future. The procedure of the modulation on the voltage of control electrode in the electron gun of the CSRm cooler was discussed. The scheme of off-line measurement was devised according to the progress.
	Slides TUYAUD03 [4.038 MB]
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TUPF07	Progress of the RF-System Developments for Stochastic Cooling at the FAIR Collector Ring	pick-up, kicker, insertion, embedded	108
	S. Wunderlich, R.M. Böhm, C. Dimopoulou, W. Maier, R. Menges, C. Peschke GSI, Darmstadt, Germany
	An overview of the recent developments regarding the RF signal processing for the stochastic cooling system of the Collector Ring is given. In focus are the developments of generic RF components which can be used at different locations within the signal paths between the pick-up and kicker tanks in the frequency band 1-2 GHz. Two of these components are discussed in detail, a power meter with high dynamic range (+9 dBm to -68 dBm), low phase distortion (± 0.75deg(max)) and low attenuation (≤ 0.4dB) and a variable phase shifter with exceptionally flat amplitude (± 0.4dB(max)) and linear phase response (± 3.5deg(max)). Furthermore, we present the status and the newest enhancements of other components with stringent specifications, such as optical notch filters, pick-up module controllers, variable attenuators, beta-switch combiners and the power amplifiers at the kickers.
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Paper

Title

Other Keywords

Page

TUYAUD03

Formation of Bunched Electron Beam at the Electron Cooler of CSRm

electron, ion, gun, cathode

85

X.D. Yang, J. Li, X.M. Ma, L.J. Mao, M.T. Tang, T.L. Yan
IMP/CAS, Lanzhou, People's Republic of China

The motivation for formation of bunched electron beam at the electron cooler of CSRm is based on the three requirements. Firstly, the high energy electron cooling, especially, the ion beam with TeV energy, the bunched electron beam for cooling would be easier than the DC operating mode. Secondly, the electric field induced by the intensity modulated electron beam will be used for the suppression of instability developed in the high intensity ion beam after accumulation with the help of electron cooling, Thirdly, the electron beam was required to turn on and off in the different period of the atomic physics experiments. Some initial design and consideration were presented in this paper. And also the current situation and condition of CSRm electron cooler were described here. An off-line testbench will be established in the laboratory, and the test and the optimization will be explored in this experimentation. The validity of this system will be verified in the near future. The procedure of the modulation on the voltage of control electrode in the electron gun of the CSRm cooler was discussed. The scheme of off-line measurement was devised according to the progress.

Slides TUYAUD03 [4.038 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPF07

Progress of the RF-System Developments for Stochastic Cooling at the FAIR Collector Ring

pick-up, kicker, insertion, embedded

108

S. Wunderlich, R.M. Böhm, C. Dimopoulou, W. Maier, R. Menges, C. Peschke
GSI, Darmstadt, Germany

An overview of the recent developments regarding the RF signal processing for the stochastic cooling system of the Collector Ring is given. In focus are the developments of generic RF components which can be used at different locations within the signal paths between the pick-up and kicker tanks in the frequency band 1-2 GHz. Two of these components are discussed in detail, a power meter with high dynamic range (+9 dBm to -68 dBm), low phase distortion (± 0.75deg(max)) and low attenuation (≤ 0.4dB) and a variable phase shifter with exceptionally flat amplitude (± 0.4dB(max)) and linear phase response (± 3.5deg(max)). Furthermore, we present the status and the newest enhancements of other components with stringent specifications, such as optical notch filters, pick-up module controllers, variable attenuators, beta-switch combiners and the power amplifiers at the kickers.

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)