Precision Measurement of theK−p→K¯0nCross Section below 1.1 GeV/c

Section 8.1: Precision Measurement and Sensor Conditioning

Introduction The high resolution Σ-∆ measurement ADC has revolutionized the entire area of precision sensor signal conditioning and data acquisition. Modern Σ-∆ ADCs offer no-missing code resolutions to 24 bits, and greater than 19-bits of noise-free code resolution. The inclusion of on-chip PGAs coupled with the high resolution virtually eliminates the need for signal conditioning circuitry—th...

Section 11

Precision Measurement of the Proton Elastic Cross Section at High Q

Using the base experimental equipment for Hall A, and beam energies of 6.6, 8.8, and 11 GeV, we propose to measure the proton elastic cross section to a statistical precision of better than 1% over a Q2 range of 7–17.5 GeV2. A few items of general purpose instrumentation are proposed to ensure that the total uncertainty will be below 2%. The resulting measurement will provide means for extracti...

Precision measurement of the hadronic cross-section through the radiative return method

Electron–positron annihilation into hadrons plus an energetic photon from initial-state radiation allows the hadronic cross-section to be measured over a wide range of energies at high luminosity meson factories. Weighted integrals over this cross-section are a decisive input for electroweak precision tests. A Monte Carlo event generator called PHOKHARA has been developed, which simulates ee → ...

New Precision Measurement of the 3 He 4 He ; 7 Be Cross Section

0031-9007= The 3He 4He; 7Be reaction plays an important role in determining the high energy solar neutrino flux and in understanding the abundances of primordial 7Li. This Letter reports a new precision measurement of the cross sections of this direct capture reaction, determined by measuring the ensuing 7Be activity in the region of Ec:m: 420 to 950 keV. Various recent theoretical fits to our ...