Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of Near-Field Vibration Sources for the NLC Linac Components   The vibration stability requirements for the Next Linear Collider (NLC) are
far more stringent than for the previous generation of Colliders. To meet these
goals, it is imperative that the effects of vibration on NLC Linac components
from near-field sources (e.g. compressors, high vacuum equipment, klystrons,
modulators, pumps, fans, etc) be well understood. The civil construction
method, whether cut-and-cover or parallel bored tunnels, can determine the
proximity and possible isolation of noise sources. This paper presents a brief
summary and analysis of recently completed and planned studies for
characterization of near-field vibration sources under either construction
method. The results of in-situ vibration measurements will also be included.

15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph