Longitudinal modulation of electron-cooled 12C6+ and 16O8+ ion beams at heavy ion storage ring CSRe

被引：3

作者：

Wang, H. B. ^{[1
]}

Wen, W. Q. ^{[1
]}

Huang, Z. K. ^{[1
]}

Zhang, D. C. ^{[2
]}

Hai, B. ^{[1
,3
]}

Bussmann, M. ^{[4
]}

Winters, D. ^{[5
]}

Zhao, D. M. ^{[1
]}

Zhu, X. L. ^{[1
]}

Li, J. ^{[1
]}

Li, X. N. ^{[1
]}

Mao, L. J. ^{[1
]}

Mao, R. S. ^{[1
]}

Zhao, T. C. ^{[1
]}

Yin, D. Y. ^{[1
]}

Wu, J. X. ^{[1
]}

Yang, J. C. ^{[1
]}

Yuan, Y. J. ^{[1
]}

Ma, X. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China

[2] Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Shaanxi, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Helmholtz Zentrum Dresden Rossendorf, D-01328 Dresden, Germany

[5] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2018年 / 908卷

关键词：

Storage ring; Heavy ion beam; Beam dynamics; Schottky noise signal; Electron-ion recombination; COOLING EXPERIMENTS; EXOTIC NUCLEI; PHYSICS; LIFETIME; MASS;

D O I：

10.1016/j.nima.2018.08.062

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The longitudinal dynamics of electron-cooled and radio-frequency (RF)-bunched C-12(6+) and O-16(8+) ion beams have been investigated at a heavy-ion experimental cooler storage ring CSRe. An rf-buncher was employed to longitudinally modulate the ion beams. A new resonant Schottky pick-up was applied to monitor the intensities and longitudinal dynamics of stored and electron-cooled ion beams. Using electron-cooling, the separated Schottky noise signals of the C-12(6+) and O-16(8+) ions were clearly observed in the Schottky spectrum. The storage times and the particle numbers of both ion beams were measured by Schottky noise, which demonstrated the ability to perform Schottky mass spectrometry measurements and also the measurement of highly charged ions at the CSRe. In addition, an enhancement of the Schottky noise signals was observed for rf-bunched ion beams, which could be used to diagnose the intensity ion beams at storage rings. Finally, a broadly longitudinal manipulation of the ion beams by scanning the bunching frequency was realized. The investigation of electron-ion recombination experiment at ultra-low collision energies by scanning the bunching frequency of the ion beams at the storage ring CSRe is proposed.

引用

页码：244 / 249

页数：6

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