The AGS booster beam position monitor system

Abstract

To accelerate both protons and heavy ions, the AGS Booster requires a broadband (multi-octave) beam position monitoring system with a dynamic range spanning several orders of magnitude (2 x 10'° to 1.5 x 10" particles per pulse). System requirements include the ability to acquire single turn trajectory and average orbit information with ±0.1 mm resolution. The design goal of ± 0.5 mm corrected accuracy requires that the detectors have repeatable linear performance after periodic bakeout at 300°C. The system design and capabilities of the Booster Beam Position Monitor will be described, and initial results presented.

First results of proton injection commissioning of the AGS booster synchrotron

“…The first instrumentation element the incoming proton beam intercepts in the Booster ring after being stripped to H + in a carbon foil is one of 46 split plate Pick Up Electrodes (PUE's). [6] These PUE's each measure beam centroid position in one plane and are located immediately prior to each quadrupole magnet that focuses the beam in the plane of measurement There are 24 in the vertical plane and 22 in the horizontal; one horizontal PUE is missing at the extraction point and one missing at the Internal Beam Dump because of the horizontally oversized vacuum chambers at these locations.…”

Beam current monitoring in the AGS booster and its transfer lines

“…The various types of monitors employed will be described. Fast bunch intensity measurements made with the beam position monitors in the LTB line [3] and in the Booster Ring, [4] and the wall current monitors in the Ring will not be described here.…”