Lepton angular distribution of Z boson production and jet discrimination
Not Available
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Engineering topics
Chang, Wen-Chen
Publications and source records attributed to Chang, Wen-Chen.
On the rotational invariance and non-invariance of lepton angular distributions in Drell–Yan and quarkonium production
Not Available
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Lepton angular distributions of fixed-target Drell-Yan experiments in perturbative QCD and a geometric approach
Not Available
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
FPGA-based Trigger System for the Fermilab SeaQuest Experimentz
The SeaQuest experiment (Fermilab E906) detects pairs of energetic μ + and μ - produced in 120 GeV/c proton–nucleon interactions in a high rate environment. The trigger system we used consists of several arrays of scintillator hodoscopes and a set of field-programmable gate array (FPGA) based VMEbus modules. Signals from up to 96 channels of hodoscope are digitized by each FPGA with a 1-ns resolution using the time-to-digital convertor (TDC) firmware. The delay of the TDC output can be adjusted channel-by-channel in 1-ns step and then re-aligned with the beam RF clock. The hit pattern on the hodoscope planes is then examined against pre-determined trigger matrices to identify candidate muon tracks. Finally, information on the candidate tracks is sent to the 2nd-level FPGA-based track correlator to find candidate di-muon events. The design and implementation of the FPGA-based trigger system for SeaQuest experiment are presented.
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗