Volker Ziemann

Expanding the doughnut? Spatial changes in housing demand since the rise of remote work

Alexandre Banquet, Manuel Betín, Maria Paula Caldas, Boris Cournède et autres

This paper analyses changes in preferences for residential locations in metropolitan areas of 16 Organisation for Economic Co-operation and Development (OECD) countries, following the COVID-19 pandemic and rise in remote working. We show that house prices have grown faster outside central locations …

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Targets and Luminosity

Volker Ziemann

In this chapter, we discuss the interaction of the beam with a target, which is the prime reason for the existence of many accelerators. We will discuss the relation between the count rate in experiments and the microscopic cross-section, which is given …

Synchrotron Radiation and Free-Electron Lasers

Volker Ziemann

While all charged particles emit electro-magnetic radiation, only electrons and positrons do so in appreciable quantities, because the emitted power is inversely proportional to the fourth power of the mass of the particles. Therefore, it is strongly suppressed for heavier particles, although …

Instrumentation and Diagnostics

Volker Ziemann

In the previous chapters we discussed how to guide and accelerate particles. In this chapter we describe devices and methods to verify that the accelerator behaves as intended and therefore ways to measure the intensity of beams, their position, and their size. …

Transverse Beam Optics

Volker Ziemann

In the previous chapter we discussed the description of particles and beams. In this chapter we describe how they are affected by the elements, for example, the magnets, in a beamline. An important task will be to adjust the magnets in order …

Non-linear Dynamics

Volker Ziemann

In most of Chapter 3 we discussed accelerator components that were represented by matrices. There, we also found the focal length of quadrupoles to depend on the momentum offset and cause the chromaticity to become non-zero. This effect becomes more important, the …

Longitudinal Dynamics and Acceleration

Volker Ziemann

In the previous chapters we discussed magnets to guide and focus particles with a given momentum p 0 or energy. We noted that static magnetic fields do not change the energy of moving particles, only their direction of propagation. In order to …

Hands-On Accelerator Physics Using MATLAB®

Volker Ziemann

Hands-On Accelerator Physics Using MATLAB®, Second Edition, provides a broad introduction into the physics and the technology of particle accelerators from synchrotron light sources to high-energy colliders. It covers the design of beam optics, magnets, and radio-frequency systems, followed by a discussion …

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Erratum zu: Einführung

Volker Ziemann

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German Beams -- The Story of Particle Accelerators in Germany

Volker Ziemann

Even though many of the experiments leading to the standard model of particle physics were done at large accelerator laboratories in the US and at CERN, many exciting developments happened in smaller national facilities all over the world. In this report we …

Swedish Beams -- The Story of Particle Accelerators in Sweden

Volker Ziemann

Even though many of the experiments leading to the standard model of particle physics were done at large accelerator laboratories in the US and at CERN[1] many exciting developments happened in smaller national facilities all over the world. In this report we …

New method to measure the unloaded quality factor of superconducting cavities

Volker Ziemann

We describe a method that measures the unloaded quality factor Q0 , the external quality factor QE , and the cavity detuning Δω with a recursive least-squares algorithm. It combines a large number of consecutive measurements to successively improve an estimate of …

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