EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH DRAFT/4 09-Feb-94

We report on the beam tests of the full scale liquid scintillator modules designed for a very forward calorimeter for an experiment at the LHC (FORWARD project). Tests were performed in the electron beams of the SPS at CERN within 20 ÷ 150 GeV energy range. The response as a function of the beam impact point and incidence angle was measured. Introduction The liquid scintillator technique for the forward calorimeter at the LHC has known advantages related to high speed, low noise and radiation hardness. The proposed solution is a SPACAL type calorimeter with a liquid scintillator circulating in a hollow light guides [1]. An R&D study is being performed as a collaboration between two russian groups (one of them involved in ATLAS project) and INFN Naples. [2]. In this paper we report on the design, construction and testing of the two full scale prototype modules. 1 The module 1.1 The design The module has parallelepiped shape with a cross-section of 66x66 mm 2 and 2380 mm length in..