CERN Accelerating science

Article
Title	Beam Measurements and Upgrade at BL 7.2, the Second Diagnostics Beamline of the Advanced Light Source
Author(s)	Scarvie, Tom ; Biocca, Alan ; Kelez, Nicholas ; Martin, Michael C ; Nishimura, Toshiro ; Portmann, Gregory J ; Sannibale, Fernando ; Williams, Eric
Affiliation	(LBNL, Berkeley)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.281
Subject category	Accelerators and Storage Rings
Abstract	Beamline BL 7.2 of the Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory is a beam diagnostics system that uses the synchrotron radiation (SR) emitted by a dipole magnet. It consists of two branches, in the first one the x-ray portion of the SR is used in a pinhole camera system for measuring the transverse profile of the beam. The second branch is equipped with a x-ray BPM system and with a multipurpose port where the visible and the infrared part of the SR can be used for various applications such as bunch length measurements and IR coherent synchrotron radiation experiments. The pinhole system has been commissioned at the end of 2003 and since then is in successful operation. The installation of the second branch has been completed recently and the results of its commissioning are presented in this paper together with examples of beam measurements performed at BL 7.2.