Observations of Random Walk of the Ground in Space and Time

被引：15

作者：

Shiltsev, Vladimir ^{[1
]}

机构：

[1] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 23期

基金：

美国能源部;

关键词：

COLLIDERS; MOTION;

D O I：

10.1103/PhysRevLett.104.238501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present results of micron-resolution measurements of the ground motions in large particle accelerators over the range of spatial scales L from several meters to tens of kilometers and time intervals T from minutes to several years and show that in addition to systematic changes due to tides or slow drifts, there is a stochastic component which has a "random-walk'' character both in time and in space. The measured mean square of the relative displacement of ground elements scales as dY(2) approximate to ATL over a broad range of the intervals, and the site dependent constant A is of the order of 10(-5+/-1) (mu m(2)/s)/m.

引用

页数：4

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