Abstract
Forward physics to be investigated with CMS at the LHC includes a wide range of topics, including low-x QCD, diffractive scattering, and constraints of cosmic ray Monte Carlo predictions for multi-particle production. We describe the forward detection instrumentation around the CMS interaction point and present selected feasibility studies to illustrate the physics potential.
Highlights
Forward physics to be investigated with CMS at the LHC includes a wide range of topics, including low-x QCD, diffractive scattering, and constraints of cosmic ray Monte Carlo predictions for multiparticle production
Forward instrumentation in the CMS experiment consists of the forward hadronic calorimeter (HF), the CASTOR and Zero Degree Calorimeter (ZDC) calorimeters
The Zero Degree Calorimeter (ZDC) is a quartz fiber and tungsten sampling calorimeter installed on both sides of IP5 at a distance of 140 m
Summary
The CASTOR (Centauro and Strange Object Research) detector is a quartz-tungsten sampling calorimeter located 14.38 m from IP5 which will cover the pseudorapidity region 5.25 < |η| < 6.5. The Zero Degree Calorimeter (ZDC) is a quartz fiber and tungsten sampling calorimeter installed on both sides of IP5 at a distance of 140 m It will provide detection coverage in the pseudorapidity region |η| > 8.1 for neutrals and photons. Each ZDC is made up of separate electromagnetic (19 radiation lengths over 5 horizontal readout units) and hadronic (4 horizontal readout units) sectors over a total depth of 6.5 interaction lengths.
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