Ripple modifications to alpha transport in tokamaks
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Magnetic field ripple is inherent in tokamaks since the toroidal magnetic field is generated by a finite number of toroidal field coils. The field ripple results in departures from axisymmetry that cause radial transport losses of particles and heat. These ripple losses are a serious concern for alphas near their birth speed v0 since alpha heating of the background plasma is required to make fusion reactors into economical power plants. Ripple in tokamaks gives rise to two alpha transport regimes of concern. As the slowing down time τs is much larger than the time for an alpha just born to make a toroidal transit, a regime referred to as the 1/ ν∝ τs regime is first encountered, with ν the appropriate alpha collision frequency. In this regime the radial transport losses increase as v0 τs / R , with R the major radius of the tokamak. The' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["background plasma","collision frequency","magnetic field ripple","ripple losses","transport processes"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Magnetic field ripple is inherent in tokamaks since the toroidal magnetic field is generated by a finite number of toroidal field coils. The field ripple results in departures from axisymmetry that cause radial transport losses of particles and heat. These ripple losses are a serious concern for alphas near their birth speed v0 since alpha heating of the background plasma is required to make fusion reactors into economical power plants. Ripple in tokamaks gives rise to two alpha transport regimes of concern. As the slowing down time τs is much larger than the time for an alpha just born to make a toroidal transit, a regime referred to as the 1/ ν∝ τs regime is first encountered, with ν the appropriate alpha collision frequency. In this regime the radial transport losses increase as v0 τs / R , with R the major radius of the tokamak. The' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Magnetic field ripple is inherent in tokamaks since the toroidal magnetic field is generated by a finite number of toroidal field coils. The field ripple results in departures from axisymmetry that cause radial transport losses of particles and heat. These ripple losses are a serious concern for alphas near their birth speed v0 since alpha heating of the background plasma is required to make fusion reactors into economical power plants. Ripple in tokamaks gives rise to two alpha transport regimes of concern. As the slowing down time τs is much larger than the time for an alpha just born to make a toroidal transit, a regime referred to as the 1/ ν∝ τs regime is first encountered, with ν the appropriate alpha collision frequency. In this regime the radial transport losses increase as v0 τs / R , with R the major radius of the tokamak. The
background plasma; collision frequency; magnetic field ripple; ripple losses; transport processes