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

ALS 5-cm-period undulator installed in sector 7 of storage ring

Image File

96804041

Title

ALS 5-cm-period undulator installed in sector 7 of storage ring

Description

Advanced Light Source 5-cm-period undulator installed in sector 7 of the storage ring. The brightest synchrotron light at the Advanced Light Source comes from undulators (located in the straight sections of the storage ring) that contain over one hundred magnetic poles lined up in rows above and below the electron beam. The magnets force the electrons into a snake-like path, so that the light from all the curves adds together. Although they are about 4.5 meters long and weigh about 40,000 pounds, the undulators have to be built to extreme precision. Many of the design tolerances are approximately 50 microns, less than the width of a human hair.

Division

Accelerator & Fusion Research

TEID Doc ID

XBD 9608-04041.TIF