Varying the Path Length of Charged Particles Using Wiggler Modules

In this paper, different versions of optical modules based on alternation of positive and neg-ative curvature magnets, called wigglers in analogy with the devices used in electron ma-chines, are presented. A careful analysis of their properties is carried out. For each module, a set of free parameters is given and the sign of the momentum compaction is discussed for various regions of the parameter space. Different types of wigglers are compared and one of them is applied to stretching an H- bunch in the transfer line from the Superconducting Proton Linac (SPL) and the accumulator ring for the CERN Neutrino Factory scenario

Analysis of different options for a high intensity proton driver for neutrino factory

This note reports a number of different layouts for designing a high intensity proton driver. Such a machine should perform beam accumulation and bunch compression in order to achieve the performance needed for the production of neutrino in the context of a Neutrino Factory. The different approaches are described in details as well as the optics of the various lattices

Automated Beam Optics Correction for Emittance Preservation

The operation of ever more complex high energy particle accelerators requires a powerful and user friendly architecture of application programs for machine physics. Among the possible applications, those concerning beam optics have been selected and it is shown that all the first order corrections, whether they are related to linear or non-linear fields, can be treated within a unified system. Examples of application are given for various types of beam steering in the PS comple

Toward CP-even Neutrino Beam

The best method of measuring CP violating effect in neutrino oscillation experiments is to construct and use a neutrino beam made of an ideal mixture of $\bar{\nu}_e$ and $\nu_e$ of monochromatic lines. The conceptual design of such a beam is described, together with how to measure the CP-odd quantity. We propose to exploit an accelerated unstable hydrogen-like heavy ion in a storage ring, whose decay has both electron capture and bound beta decay with a comparable fraction.Comment: 6 pages, 2 figures, Published versio

Application of Wigglers to Quasi-isochronous Transport Systems

The transition energy of a circular machine based on standard FODO lattices depends on the horizontal optics of the cell and, therefore, on the average radius of the machine. This property imposes tight constraints on the design of isochronous machines that are frequently considered for applications such as electron and proton accumulators ormunrs.Th epriceto be paid to satisfy the isochronous condition is to have a dispersion function with very large peak values aloneh machine circumference. In this paper, a number of optical modules, which we call wigglers, in analogy with the devices used in electron machines, are presented that overcome such difficulties. A careful analysis of their properties is carried out. Using these new concepts, it is shown how to design isochronous machines for which the machine radius and the transition energy are independent of each other, while keeping the value of the dispersion function under control

Automatic beam steering in the CERN PS complex

The recombination, transfer and injection of the four beams from the PS Booster to the PS Main Ring, have a high level of intri-cacy and are a subject of permanent concern for the operation of the PS Injector Complex. These tasks were thus selected as a test bench for the implementation of a prototype of an auto-matic beam steering system. The core of the system is based on a generic trajectory optimizer, robust enough to cope with imper-fect observations. The algorithmic engine is connected to pick-up monitors and corrector magnets and its decision can be val-idated by the operator through a graphics user interface. Auto-matic beam steering can only be ef®cient if the beam optics is fully con®rmed by experimental observations, a conditionwhich forces the systematic elimination of errors both in hardware and software. I

Emittance preservation in the PS complex

As the LHC injectors have to provide bright beams, all the potential sources of emittance blow-up must be eliminated. One such source arises from the mismatch of the betatron focusing at the interface of a transfer line with a circular machine. Measurements and corrections of this effect have been performed in the line downstream of the linac where space charge plays an important role and between the booster and the PS ring where four beams are recombined and have to be matched simultaneously

θ13\theta_{13}, δ\delta and the neutrino mass hierarchy at a γ=350\gamma=350 double baseline Li/B β\beta-Beam

We consider a $\beta$-Beam facility where $^8$Li and $^8$B ions are accelerated at $\gamma = 350$, accumulated in a 10 Km storage ring and let decay, so as to produce intense $\bar \nu_e$ and $\nu_e$ beams. These beams illuminate two iron detectors located at $L \simeq 2000$ Km and $L \simeq 7000$ Km, respectively. The physics potential of this setup is analysed in full detail as a function of the flux. We find that, for the highest flux ($10 \times 10^{18}$ ion decays per year per baseline), the sensitivity to $\theta_{13}$ reaches $\sin^2 2 \theta_{13} \geq 2 \times10^{-4}$; the sign of the atmospheric mass difference can be identified, regardless of the true hierarchy, for $\sin^2 2 \theta_{13} \geq 4\times10^{-4}$; and, CP-violation can be discovered in 70% of the $\delta$-parameter space for $\sin^2 2 \theta_{13} \geq 10^{-3}$, having some sensitivity to CP-violation down to $\sin^2 2 \theta_{13} \geq 10^{-4}$ for $|\delta| \sim 90^\circ$.Comment: 35 pages, 20 figures. Minor changes, matches the published versio