Effects of a nonlinear damping force in synchrotrons with electron cooling

Caussyn, D.D.; Ball, M.; Budnick, J. I.; East, G.; Ellison, M.; Hamilton, B.; Hedblom, K.; Lee, S.Y.; Li, D.; Liu, J.Y.; Ng, K.Y.; Riabko, A.; Wang, L.; Wang, Y. ||

doi:10.1103/physreve.51.4947

Cited by 9 publications

(4 citation statements)

References 12 publications

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“…For such low effective velocity, the single-particle friction force would have a maximum around this small value having a non-linear decrease of the force for larger velocities. As a result, significant large-amplitude oscillations for the relative velocities corresponding to the non-linear part of the force are expected [7]. However, we did not see such oscillations for the velocities in this range.…”

Section: Fitting Experimental Curvesmentioning

confidence: 59%

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Experimental Benchmarking of the Magnetized Friction Force

Fedotov¹,

Gålnander²,

Litvinenko³

et al. 2006

AIP Conference Proceedings

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High-energy electron cooling, presently considered as essential tool for several applications in high-energy and nuclear physics, requires accurate description of the friction force. A series of measurements were performed at CELSIUS with the goal to provide accurate data needed for the benchmarking of theories and simulations. Some results of accurate comparison of experimental data with the fiiction force formulas are presented.

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Section: Fitting Experimental Curvesmentioning

confidence: 59%

“…In our experiments, changing the FW frequency by a few Hz resulted in a very fine step in relative velocity. A similar technique was used ,successfully before, for example at IUCF [7]. In experiments reported in this paper, the longitudinal friction force curves were measured for protons at the injection energy of 48 MeV.…”

Section: Measurement Approachmentioning

confidence: 99%

Experimental Benchmarking of the Magnetized Friction Force

Fedotov¹,

Gålnander²,

Litvinenko³

et al. 2006

AIP Conference Proceedings

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show abstract

“…Mathematically, this corresponds to a Hopf bifurcation. This phenomenon was observed and investigated in the Cooler (33)(34)(35), and it was demonstrated that one could make use of it to measure the temperature of the electron beam.…”

Section: Electron Coolingmentioning

confidence: 98%

The Indiana Cooler: A Retrospective

Meyer

2007

Annu. Rev. Nucl. Part. Sci.

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From 1983 to 2002, the Indiana Cooler was constructed and operated at the Indiana University Cyclotron Facility. During that period, a relatively small group of people built an accelerator complex, explored the new technology of electron cooling, and demonstrated its usefulness in nuclear and particle physics. This review recounts the history of the project, describes the facility, and summarizes the scientific results in atomic, nuclear, and particle physics, and in the physics of beams.

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“…The phase.shift.method has been employed earlier in different varieties at CELSIUS [5] and at other laboratories such as IUCF [6], TSR [7] and MSL [8]. ' …”

Section: Methodsmentioning

confidence: 99%

Cooling Force Measurements at CELSIUS

Gålnander¹,

Fedotov²,

Litvinenko³

et al. 2006

AIP Conference Proceedings

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Abstract. The design of.future high energy coolers relies heavily on extending the results of cooling force measurements into new regimes by using simulation codes. In; order to carefully benchmark these codes we have accurately,measured the longitudinal friction force in CELSIUS by recording the phase shift between the beam and the RF voltage while .varying the RF frequency. ,Moreover, parameter dependencies on the electron current, solenoid magnetic field and magnetic field alignment were carried out.

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Effects of a nonlinear damping force in synchrotrons with electron cooling

Cited by 9 publications

References 12 publications

Experimental Benchmarking of the Magnetized Friction Force

Experimental Benchmarking of the Magnetized Friction Force

The Indiana Cooler: A Retrospective

Cooling Force Measurements at CELSIUS

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