H1 Calorimeters: Introduction
The H1 Calorimeter group is a subgroup of about 150 physicists and technicians
inside the H1 experiment, which is build for investigation of sub nuclear
matter and the forces in between. This is done at HERA via deep inelastic
collisions of protons and leptons. The task of calorimeters is to measure
the energy of particles emerging from these collisions. In the central
H1 detector we have four different calorimeters:
a liquid argon calorimeter (LAr) with high granularity, covering the
forward and central region of H1,
a copper-silicon calorimeter located in the forward region close to the
beam pipe, called PLUG,
a backward calorimeter, which has been in the first three years of H1
operation a conventional lead-scintillator sampling calorimeter (BEMC).
In 1995 a new spaghetti calorimeter (SPACAL) has been implemented.
a hadron calorimeter inside the iron yoke for measuring hadrons passing
all inner detectors, called therefore Tail Catcher (TC).