Design of a new Emittance Meter for LINAC4

Abstract

LINAC4 is the first step in the upgrade of the injectors chain of the Large Hadron Collider (LHC). This Linac will accelerate H- ions from 45 keV to 160 MeV. During the commissioning phase of LINAC4 transverse emittance measurements will be required at 45 keV, 3 MeV and 12 MeV. For this purpose a slit&grid system is currently being developed. The material and the geometry of the wires and of the slit need to be optimized in order to minimize the negative effects of the energy deposition and maximize the signals. This document describes the results of the studies carried out during the design of the emittance meter