Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient and robust evaluation of fast particle losses in
  non-axisymmetric tokamak plasmas   We present various techniques that make orbit-following Monte Carlo
simulations faster and more reliable when assessing collisionless fast particle
losses due to magnetic field perturbations. These techniques are based on
identifying various loss channels in constants of motion space using the
so-called loss maps. We demonstrate that this allows one to attribute losses
quantitatively to different transport mechanisms, increase signal-to-noise
ratio when estimating FILD signal and peak power loads, and connect magnetic
field structure directly to fast particle losses. Furthermore, we show that
collisionless fast particle transport can be treated as an advection-diffusion
process where the transport coefficients can be evaluated with the
orbit-following method. Applying these techniques has the potential to make
orbit-following simulations faster to perform, or to avoid them completely,
while making the results more reliable as they become more clearly connected to
underlying physics. We demonstrate these techniques for ITER by showing how
alpha particle losses are affected by various magnetic field perturbations,
estimating ICRH losses in reduced field scenarios, and performing a scan on
alpha particle losses as a function of ELM control coil current phases.

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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: q-alg