BL 7.2, The second diagnostic beam line for the ALS

Beamline 7.2 of the Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory (LBNL) is a beam diagnostics system that uses the synchrotron radiation emitted by a dipole magnet. It consists of two branches; in the first one the x-ray portion of the radiation is used in a pinhole camera system for measuring the transverse profile of the beam. The second branch is equipped with an x-ray beam position monitor (BPM) and with a multipurpose port where the visible and the far-infrared part of the radiation can be used for various applications such as bunch length measurements and IR coherent synchrotron radiation experiments. The pinhole system has been operating successfully since the end of 2003, with the visible/IR branch and x-ray BPM commissioned in 2005.

Beamline 7.2 Overview

A second beam-diagnostic beamline For The Advanced Light Source
(PAC 2003 paper, PDF)

Commissioning of BL 7.2, the new diagnostic beam line at the ALS
(EPAC 2004 paper, PDF)

Beam measurements and upgrade at BL 7.2, the second diagnostics beamline of the Advanced Light Source
(PAC 2005 paper, HTML )

Powerpoint slides from PAC 2005 talk

Cooling water flow vs. vibration measurements
(ALS Internal Note, DOC)

Error analysis used for beamline specification
(ALS LSAP Note, PDF)

Contacts: Fernando Sannibale, Tom Scarvie