J Chapman

Professor Chapman's research specialty is Experimental High Energy Physics. In recent years, research results in this field have led to increased confidence in the Standard Model of weak, electromagnetic, and strong interactions and the discovery of the long anticipated Higgs Boson. Currently, the experimental challenges are split between further refinements of the parameters of the model and searches for physics not described by the model.

Michigan is a major US institution in the ATLAS Collaboration at the LHC for the preparation of major parts of the precision muon detector and for its electronics instrumentation. In the year 2000, Dr. Chapman assumed oversight responsibility for the design and commissioning of the on-detector muon electronics. During 2000 and several years following, Dr. Chapman was resident at CERN for the installation of that same muon electronics. Michigan also provided a key part of on-detector electronics, the fast readout multiplexer, called the Chamber Service Module, CSM.

As Emeritus, Dr. Chapman remains active in the design of an upgrade for the muon electronics, providing a design that can deliver a ten fold increase in the readout capability. Dr. Zhu and Schwarz are active faculty engaged in this work as well.

Selected Publications

Data Flow Simulations through the ATLAS Muon Front-End Electronics, (J. Chapman, et. al.), Proceedings of the Fifth Workshop on Electronics for LHC Experiments, Snowmass, CO (1999).

Measurement of the tt Production Cross Section in pp Collisions at sqrt (s)=1.8 TeV, (The CDF Collaboration), Phys. Rev. Lett. 80, 2773, (1998).

Measurement of the Top Quark Mass, (The CDF Collaboration), Phys. Rev. Lett. 80, 2767, (1998).

Field(s) of Study

• Elementary Particle Experiment