110433624
A Simple beam line for the MuCool test area
This note describes a simple beam line to transport H{sup -} beam from the end of the Fermilab 400 MeV Linac to the MuCool Test Area (MTA). The design uses existing dipoles and quadrupoles and other equipment now available at Fermilab. Deflection of single 15 Hz beam pulses from the Linac to the MTA is accomplished using pulsed magnets that are essentially Main Injector trim dipoles with thinner laminations. The beam size is kept small to control beam losses and allow the use of existing surplus or spare equipment. An upgrade of the beam line to illuminate larger objects at high intensity is described.
119759465
NUCLEON ISOBAR PRODUCTION IN PROTON--PROTON COLLISIONS BETWEEN 3 AND 7 GeV/ c.
Author(s): Ankenbrandt, C.M.; Clark, A.R.; Cork, Bruce; Elioff, T.; Kerth, L.T.; Wenzel, W.A.
91348757
H− Charge Exchange Injection Systems
The techniques and components required for injection of protons into cyclic accelerators by means of H− charge exchange processes are reviewed, with emphasis on the experience at Fermilab. The advantages of the technique are described. The design and performance of the system of injection of H− ions into the Fermilab Booster are detailed.
55877711
Design Concept for nu-STORM: An Initial Very Low-Energy Neutrino Factory
We present a design concept for a {nu} source from a STORage ring for Muons ({nu}STORM). In this initial design a high-intensity proton beam produces {approx}5 GeV pions that provide muons that are captured using 'stochastic injection' within a 3.6 GeV racetrack storage ring. In 'stochastic injection', the {approx}5 GeV pion beam is transported from the target into the storage ring, dispersion-matched into a long straight section. (Circulating and injection orbits are separated by momentum.) Decays within that straight section provide muons that are within the {approx}3.6 GeV/c ring momentum acceptance and are stored for the muon lifetime of {approx}1000 turns. Muon (and pion) decays in the long straight sections provide neutrino beams of precisely known flux and flavor that can be used for precision measurements of electron and muon neutrino interactions, and neutrino oscillations or disappearance at L/E = {approx}1m/MeV. The facility is described, and variations are discussed.
125630624
Physics Study Group report on physics potential at FNAL with stronger proton sources
19661442
Modification of the horizontal dispersion in the Fermilab main ring with additional quadrupoles
In the normal main ring lattice, the horizontal dispersion includes a dispersion wave which peaks at 6.2 m because the horizontal dispersion of the arcs is not matched into the straight sections. Six additional small quadrupoles have been installed, one in each sector, and powered at low energies (up to 30 GeV) in order to reduce the amplitude of the dispersion wave. The maxima of the dispersion function was thereby reduced to less than 4.7 m, thus improving the momentum acceptance of the main ring. Measurements of the modified dispersion function agree well with the expected values.<<ETX>>
16280681
The Compact Group of Galaxies HCG 31 in an Early Phase of Merging
We have obtained high spectral resolution (R = 45,900) Fabry-Perot velocity maps of the Hickson compact group HCG 31 in order to revisit the important problem of the merger nature of the central object A+C and to derive the internal kinematics of the candidate tidal dwarf galaxies in this group. Our main findings are as follows: (1) double kinematic components are present throughout the main body of A+C, which strongly suggests that this complex is an ongoing merger; (2) regions A2 and E, to the east and south of complex A+C, present rotation patterns with velocity amplitudes of ~25 km s-1, and they counterrotate with respect to A+C; and (3) region F, which was previously thought to be the best example of a tidal dwarf galaxy in HCG 31, presents no rotation and negligible internal velocity dispersion, as is also the case for region A1. HCG 31 presents an undergoing merger in its center (A+C), and it is likely that it has suffered additional perturbations due to interactions with the nearby galaxies B, G, and Q.