Microwave Measurements and Beam Instrumentation Laboratory

Overview

Class taught with Ralph Pasquinelli of Fermilab for the USPAS . Students are awarded full credit equivalent to graduate course at the host university. Taught at: Duke University 1995 , Beijing, China 1998, Vanderbuilt University 1999 , Stony Brook 2000 , University of California, Los Angeles 2002 , University of California, Berkeley 2005 , Texas A &M University 2007 , University of California, Santa Cruz 2010 , University of Texas, Austin 2012 , Old Dominion University 2015 .

The course consists of lectures and hand-on laboratories. Topics of lectures include

  • Microwave Measurements in the time and frequency domains, basics of spectrum analyzers, vector signal analyzers, and time domain reflectometer
  • Transmission lines, complex impedance, reflection coefficients
  • Microwave measurements with a Vector Network Analyzer, basics of vector network analyzers
  • Microwave components and devices, splitters, circulators, directional couplers, filters, etc.
  • Beam signals for Circular Accelerators, beam spectrums, power spectral density, betatron and synchrotron signals
  • Signals, noise, and dynamic range, basic noise performance of devices and systems
  • Impedance matching, basic of matching devices
  • RF cavity measurements, cavity basics, bead pull, coupling, cavity bandwidth

Hand-on labs include:

  • Spectrum Analyzer:
    Measurement of simple signals on a spectrum analyzer to understand resolution bandwidth, video bandwidth, dynamic range, noise, etc.
  • TDR:
    Measurement of characteristics of various connector families, transmission lines, complex loads.
  • Components:
    Measurement of the s-parameters of a variety of microwave components.
  • Beam Signals:
    Utilize an arbitrary function generator to simulate beam signals from the accelerator, AM for betatron signals, FM for synchrotron signals.
  • Noise:
    Consists of measuring the noise performance of a microwave amplifier. The amplifier will then be part of a "system" and noise performance of the system will be compared to individual noise performance of the components.
  • Matching:
    Design and build a simple single stub transmission line matching circuit.
  • RF Cavities:
    Measure mode spectrums of a cavity, the cavity coupling, loaded and unloaded Q, the electric field profile and R/Q of a cavity by the bead pull method.
  • Vector Signal Analyzer:
    Use of a vector signal analyzer for measuring Am and FM modulation.
  • Waveguides:
    Measurements with LRL 550B Microwave Student Lab.
  • Mixers:
    Measurements with double balanced mixers, linearity, conversion loss, intermodulation products.

Prerequisites: Undergraduate Electromagnetism

Lecture No.
Lecture
Lecturer
Format
1
Introduction
Pasquinelli
pdf
2
Transmission Lines
McGinnis
ppt  pdf  video1  video2 
3
Network Analyzer Basics
Pasquinelli
ppt  pdf 
4
Spectrum Analyzer Basics
Pasquinelli
ppt  pdf 
5
RF Cavities
McGinnis
ppt  pdf  video 
6
Time Domain Reflectometer
Pasquinelli
pdf  video1  video2 
7
Accelerator Beam Signals
McGinnis
ppt  pdf  video 
8
Noise in Electronic Systems
Pasquinelli
pdf  eqns  Agilent  video 
9
RF Systems for Accelerators
Pasquinelli
ppt  pdf  video 
10
Vector Signal Analyzer
Pasquinelli
pdf 
11
Microwave Components
Pasquinelli
pdf 
12
Mixers and Frequency Conversion
Pasquinelli
pdf 
Lab No.
Lab
Lecturer
Format
1
VSWR measurement with LRL kit
Pasquinelli
pdf
2
Impedance measurements LRL kit
McGinnis
pdf
3
Matching with transmission lines
McGinnis
pdf
4
Spectrum analyzer basics
Pasquinelli
pdf
5
Measure cavity coupling and Q
McGinnis
pdf
6
Cavity bead pull measurements
McGinnis
pdf
7
Use of a TDR
Pasquinelli
pdf
8
Beam signals
McGinnis
pdf
9
Noise figure
Pasquinelli
pdf
10
Vector Signal Analyzer lab
Pasquinelli
pdf
11
Component measurements
Pasquinelli
pdf
12
Mixers
Pasquinelli
pdf

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