This report is intended to describe first, the principal physics reasons for an ambitious experimental program in neutrino physics and proton decay based on construction of a series of massive water Cherenkov detectors located deep underground (4850 ft) in the Homestake Mine of the South Dakota Science and Technology Authority (SD-STA); and second, the engineering design of the underground chambers to house the Cherenkov detector modules; and third, the conceptual design of the water Cherenkov detectors themselves for this purpose. Included in this document are preliminary costs and time-to-completion estimates which have been exposed to acknowledged experts in their respective areas. We have included some contingency factors. Nevertheless, we recognize that much more extensive documentation and contingency estimates will be needed for a full technical design report.In this proposal we show the event rates and physics sensitivity for beams from both FNAL (1300 km distant from Homestake) and BNL (2540 km distant from Homestake). The program we propose will benefit with a beam from FNAL because of the high intensities currently available from the Main Injector with modest upgrades. The possibility of tuning the primary proton energy over a large range from 30 to 120 GeV also adds considerable flexibility to the program from FNAL.
The reactions 40 Ca(£,^>) and u Ca, (t,p) have been studied at a bombarding energy of 7.5 MeV using an E-AE solid-state detector telescope with an over-all energy resolution of about 50 keV. A cross-section fluctuation analysis was carried out on the ^Ca^,^) reaction; it showed that the compound-nucleus process did not contribute significantly to the observed transitions. Twenty-seven excited states in 42 Ca and 24 in 46 Ca have been identified. The principal maxima in the angular distributions of the stronger 40 Ca(/,^>) transitions have been fitted with the predictions of a relatively simple distorted-wave Born-approximation stripping code, and L values have been assigned for 16 transitions. These values are in agreement with previously assigned spins and parities in all cases where the latter have been reported. L values were assigned to 12 u C&(t,p) transitions. The ratios of cross sections for certain corresponding transitions in the 40 Ca{t,p) and i4 C&(t,p) reactions have been compared with the theoretical predictions assuming pure (/V/2 n ) configurations for these states; agreement was found for the ground and the 4-j-states, but not for the 2-f states. The strongly excited levels of 42 Ca and 46 Ca are discussed in terms of shell-model configurations. Evidence is presented for the hypothesis that neutron configurations of the type (/7/2 n_1 P3/2) are not the major components of the wave functions of states in 42 « 44 » 46 Ca at excitation energies below 4 MeV, in contrast with a number of theoretical treatments of these isotopes which have placed such configurations at energies < 3
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.