Generation of multiple bipolar voltage pulses for a phase rotation LIA
In the year 2000, a design concept of a Neutrino Factory based on Muon Storage Ring was studied at FNAL. To treat high energy spread of muons that come out of a target and decay channel and are to be accelerated before they go into the storage ring, a phase rotating scheme using a long-pulse accelerating system has been proposed. In this system the accelerating voltage is to be shaped to correct the energy spread. To implement this approach, the pulse power system has been suggested that allows forming a bipolar accelerating voltage pulse with the predefined shape. This report addresses some issues of the pulse shape optimization and describes main features of the accelerating system comprising an accelerating structure similar to that of a linear induction accelerator (LIA) and a pulser that drives it.
Muon transport channels with longitudinal magnetic field
As part of Fermilab Neutrino Factory study, a preliminary analysis has been made to realize the feasibility and complexity of the magnetic systems for the drift channel, phase rotation channel, and cooling channel. For each channel, a simple optimization was made with the goal of reducing its cost. Although design and implementation of every channel discussed above is a nonstandard technical task, one can expect to meet the most challenging problems working with the cooling channel. Both radial and axial ponderomotive forces in this channel are extremely large as well as the interacting forces acting on the first and the last magnets in the string. Because the mechanical behavior of a magnet in this channel is the main issue to study, thorough modeling of the system is a must in this case. Other objects of study are optimization of the quench protection system and analysis of stresses in coils during cooling down and warming up. Undoubtedly, modeling and prototyping of the channel magnets must accompany development of magnetic systems for the Neutrino Factory front end.
A Phenomenological Study of the Wind Band Experience: Stories of Band
A PHENOMENOLOGICAL STUDY OF THE WIND BAND EXPERIENCE: