Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modeling of H- ion source at LANSCE   We report on the progress in modelling performance of the H- ion source at
LANSCE. The key aspect we address is the lifetime of the tungsten filament. The
lifetime depends on multiple parameters of the ion source and can dramatically
vary in different regimes of operation. We use the multiphysics approach to
model the performance of the ion source. The detailed analysis has been made to
recognize key physical processes, which affect the degradation of the filament.
The analysis resulted in the analytical model, which includes relevant
processes from the first principles. The numerical code based on this model has
been developed and benchmarked. The results of the modelling show good
agreement with experimental data. As a result, the developed model allows
predicting the performance of the ion source in various regimes of operation.

16
The categories of this paper are: stat
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th