Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron cloud effects: codes and simulations at KEK   Electron cloud effects had been studied at KEK-Photon Factory since 1995. e-p
instability had been studied in proton rings since 1965 in BINP, ISR and PSR.
Study of electron cloud effects with the present style, which was based on
numerical simulations, started at 1995 in positron storage rings. The
instability observed in KEKPF gave a strong impact to B factories, KEKB and
PEPII, which were final stage of their design in those days. History of cure
for electron cloud instability overlapped the progress of luminosity
performance in KEKB. The studies on electron cloud codes and simulations in KEK
are presented.

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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
1
The categories of this paper are: cs
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org