Mu2e Solenoid Field Mapping System Design Feher, Sandor; DeLurgio, Patrick; Elementi, Luciano ...
IEEE transactions on applied superconductivity,
04/2018, Letnik:
28, Številka:
3
Journal Article
Recenzirano
Odprti dostop
The Mu2e experiment at Fermilab plans to search for charged-lepton flavor violations by looking for neutrino-less muon to electron conversions in the field of the nucleus. A complex solenoid system ...and precise knowledge of its magnetic field play a major role in the experimental approach Mu2e has chosen. It is essential to map the solenoid field up to 10 -4 accuracy. This article describes the design of the Field Mapping System Mu2e will use to measure the magnetic field. Two different mechanical mapper systems, a survey-based position determination of the in-house calibrated three-dimensional Hall probes, a motion control system, and a data acquisition and readout system are presented.
The goal of the Mu2e experiment at Fermilab is to search for charged-lepton flavor violation by looking for neutrino-less muon to electron conversion in the field of the nucleus. The Mu2e ...experimental apparatus utilizes a complex magnetic field in the muon generation and momentum and charge selection process. Precise knowledge of the magnetic field is crucial. It is planned to map the solenoid field with calibrated three-dimensional (3-D) Hall probes up to 10 -5 accuracy. This article describes a new design of a Hall probe calibration system that will be used to calibrate 3-D Hall probes to better than 10 -5 accuracy for the Mu2e solenoid field mapping system.
The design of the first-level trigger processor for the ZEUS calorimeter is discussed. This processor accepts data from the 13000 photomultipliers of the calorimeter, which is topologically divided ...into 16 regions, and after regional preprocessing performs logical and numerical operations that cross regional boundaries. Because the crossing period at a HERA collider is 96 ns, it is necessary that first-level trigger decisions be made in pipelined hardware. One microsecond is allowed for the processor to perform the required logical and numerical operations, during which time the data from ten crossings would be resident in the processor while being clocked through the pipelined hardware. The circuitry is implemented in 100 K emitter-coupled logic (ECL), advanced CMOS discrete devices and programmable gate arrays, and it operates in a VME environment. All tables and registers are written/read from VME, and all diagnostic codes are executed from VME. Preprocessed data flow into the processor at a rate of 5.2 GB/s, and processed data flow from the processor to the global first-level trigger at a rate of 700 MB/s. The system allows for subsets of the logic to be configured by software and for various important variables to be histogrammed as they flow through the processor.< >
Narrow-beam X-ray tests of CCD edge response Kuhlmann, Stephen; Spinka, Harold; Bernstein, Joseph P. ...
Experimental astronomy,
04/2011, Letnik:
29, Številka:
3
Journal Article
Recenzirano
The physical boundaries of a fully-depleted CCD can lead to distorted field lines and non-uniform response. We study this response with a beam of X-rays constrained to a width of less than one pixel ...(15
m), and a system to map the CCD response as a function of transverse position.
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