LBNL Image Library -- Collection BERKELEY-LAB/RESEARCH-1991-PRESENT/ADVANCED-LIGHT-SOURCE

ALS survey and alignment crew working at storage ring

Image File

96804039

Title

ALS survey and alignment crew working at storage ring

Description

Advanced Light Source survey and alignment crew at work on top of the storage ring. They are using an Advanced Light Source- devised tool called a monopod that substantially decreases the time required for survey of Advanced Light Source monuments, while increasing survey accuracy. The monopod's main component is a cylinder of carbon fiber, chosen for of its low coefficient of thermal expansion. At the monopod's bottom end is a beveled cup designed to rest on a precision target placed in a monument; the top end has an adapter used to mount any of several surveying instruments or targets. The monopod shown extends through the storage ring shielding to a monument set in the floor under the storage ring; shorter ones are used for measurements made from the experiment floor.

TEID Doc ID

XBD 9608-04039.TIF