This book is an excellent introduction to proton precession magnetometers. It starts with a simple nontechnical explanation of how these magnetometers work. The rest of the book is then devoted to a detailed description of how to build a magnetometer called the Magnum. This is a device that Exstrom Laboratories once sold as a commercial product (The original web page for the product can be found here.) The table of contents and sample chapters can be found below.
List price: $24.95
Soft cover: 150 pages
Publisher: Exstrom Laboratories LLC
Imprint: Abrazol Publishing
ISBN: 9781887187008
Library of Congress Control Number: 2008901596
The book went to the printer on Mar 4, 2008. The official publication date is May 2008. The book is now available at book stores and distributors, and can be ordered at:
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1 Introduction
1.1 The proton precession magnetometer
1.2 How PPM’s work
1.3 Overview of magnetometer
2 Polarization Coil and Platform
2.1 Materials not allowed
2.2 Wire for polarizing coil
2.3 Purpose of polarizing coil
2.4 Positioning polarizing coil
2.5 Inductance of a coil
2.6 Magnetic field strength due to coil
2.7 Polarizing coil parts list
2.8 Specifications of polarizing coil
2.9 Construction of polarizing coil
2.10 Tiltable platform parts list
2.11 Construction of tiltable platform
3 Pulse Controller
3.1 Purpose of pulse controller
3.2 Quenching the current
3.3 How a MOSFET works
3.4 Advantage of using multiple MOSFETs
3.5 Pulse controller circuit description
3.6 Microcontroller circuit description
3.7 Microcontroller software
3.8 Power supply
3.9 Assembly and enclosure
3.10 Pulse controller parts list
4 Sensor Coil
4.1 Sensor coil requirements
4.2 How the coils are wired together
4.3 How to connect cable to coils
4.4 Specifications of sensor coil
4.5 Sensor coils parts list
4.6 Construction of sensor coils
The content below here is only available with the book.
5 Amplifier
5.1 Why a differential amplifier is best
5.2 Why a low noise amplifier is needed
5.3 Description of amplifier circuit
5.4 Supplying power to the amplifier
5.5 Layout of amplifier circuit
5.6 Capacitors at amplifier input
5.7 Estimating precession frequency
5.8 Amplifier parts list
6 Data Acquisition and PC Control
6.1 What sampling rate to use
6.2 What resolution to use
6.3 How long to take data
6.4 The ADC board used in the Magnum
6.5 Pulse controller and data acquisition software
7 Data Processing and Analysis
7.1 Signal averaging
7.1.1 Why it improves signal to noise ratio
7.1.2 Limits due to MOSFET slow down
7.2 Filtering the data
7.3 Spectral analysis using the FFT
7.4 Converting bin number to actual frequency
7.5 High resolution spectrum for peak location
A Magnum Control Program
B Microcontroller Program
Bibliography
Index