LARP LHC 4.8 GHZ Schottky System Initial Commissioning with Beam

TL;DR

This paper reports on the initial commissioning of the LHC Schottky system, a set of four 4.8 GHz receivers designed to measure beam parameters like tune and chromaticity, with successful detection of initial signals at nominal beam currents.

Contribution

It presents the hardware commissioning process and initial signal detection results of the LHC Schottky system, a novel setup for beam diagnostics.

Findings

Successful detection of incoherent Schottky signals at nominal beam currents

Commissioning of four independent 4.8 GHz receivers

Initial results demonstrating system capability

Abstract

The LHC Schottky system consists for four independent 4.8 GHz triple down conversion receivers with associated data acquisition systems. Each system is capable of measuring tune, chromaticity, momentum spread in either horizontal or vertical planes; two systems per beam. The hardware commissioning has taken place from spring through fall of 2010. With nominal bunch beam currents of 1011 protons, the first incoherent Schottky signals were detected and analyzed. This paper will report on these initial commissioning results. A companion paper will report on the data analysis curve fitting and remote control user interface of the system.