Titlebook: Low-Level Radio Frequency Systems; Stefan Simrock,Zheqiao Geng Book 2022 The Editor(s) (if applicable) and The Author(s), under exclusive

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Stefan Simrock,Zheqiao Gengf we return to the quotation from Fichte mentioned in Chapter 2 (from his ., delivered in Berlin in 1807–1808 while it was occupied by Napoleon’s troops), he explicitly connects language and national identity with political rights in the next clause: ‘it is true beyond doubt that, wherever a separat

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Republic of Yugoslavia (SFRY) was collapsing, and tensions among Croatia and the other constituent republics were running high. After the first multi-party elections in Croatia in the spring of that year brought Franjo Tudman and his nationalist Croatian Democratic Union party to power (the Hrvatska

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Introduction,RF amplifiers produce the RF drive power to build up electromagnetic fields in the cavities or structures. We also denote the electromagnetic fields as .s or .s, oscillating at the RF frequency. When a particle passes through the cavities or structures, it exchanges energy with the RF fields. Theref

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RF Control Strategy,erformance objectives. Different control strategies have been developed to solve the RF control problems raised by different machines. In this chapter, we give an overview of the RF control strategies widely used in LLRF systems. We will briefly compare the feedback and feedforward control, the ampl

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RF System Models,utputs and inputs of the RF system in the form of transfer functions. The transfer functions provide insights into the behavior and limitations of the RF system. For example, we may predict the RF system outputs in the presence of RF drive, beam loading and external distrubances (e.g., electromagnet

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RF Field Control,d algorithms, regulating the RF field to follow set points or stabilizing it against disturbances. This chapter will discuss the principles of GDR, SEL, and PLL control strategies. Several widely used feedback and feedforward algorithms will be introduced. These algorithms can be applied to practica

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RF Detection and Actuation,ators perform the inverse transformations. This chapter starts with an introduction to several widely used analog or digital RF detection schemes. Then we focus on the digital solutions and provide a few popular RF detection algorithms. The non-I/Q demodulation algorithm will be discussed in detail.

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Noise in RF Systems,er. The RF detector noise determines the RF field measurement precision and resolution and affects the RF field stability via feedbacks. A systematic analysis of the noise, including where it comes from and how it affects the RF field, is required to specify the RF system performance requirements. I