Progress with the 2Q-LEBT Facility for the RIA Project
The design goal of 400 kW uranium beam in the Rare Isotope Accelerator (RIA) Driver Linac can be achieved employing a concept of simultaneous acceleration of two charge states. It has been undertaken to build a prototype 2Q-injector of the RIA Driver Linac which includes an ECR ion source, a LEBT and one-segment of the prototype RFQ. The project called the 2Q-LEBT Facility is being developed in the Physics Division of ANL. Currently, the 2Q-LEBT Facility consists of BIE-100 ECR ion source. The reassembly and commissioning of the source has been completed. During the commissioning process we redesigned and manufactured a few components of the source to increase the beam production performance. A new diagnostic station has been designed and built for accurate measurements of the output beam emittance. The further development of the 2Q-LEBT Facility comprises installation of the source on 100 kV high-voltage platform, building an achromatic bending and transport system including the multi-harmonic buncher, and a full power 57.5 MHz RFQ segment. This report includes a detailed description of the 2Q-LEBT design and beam dynamics simulations along with emittance measurements for various beams.
The BIE100 ECR ion source
BIE100, an all-permanent-magnet-based electron cyclotron resonance (ECR) ion source, has been under development at Berkeley Ion Equipment (BIE). With a relatively small but optimized source magnet volume, the maximum peak magnetic field strengths of the BIE100 reach 13 kG on axis and 11 kG at the plasma chamber walls, respectively. Microwaves of frequencies of 12.75 and 14 GHz are to simultaneously heat the plasma electrons. The development goal of this ECR ion source is to further explore the capabilities of ECR ion source in the efficient production of the intermediate and high charge state rare ion beams needed for the generation of rare ion beams and industrial applications. This article will present the design features of the BIE100 ion source and its current status.
Philosophy of Education
LIST OF FIGURES PREFACE ACKNOWLEDGEMENTS 1 Philosophy of Education Before the Twentieth Century Socrates and Plato Aristotle Rousseau Pestalozzi, Herbart, and Froebel Summary Questions Introduction to the Literature 2 The Philosophical and Educational Thought of John Dewey Dewey's Philosophical Orientation The Meaning and Aims of Education Dewey's Psychology Dewey's Theory of Knowledge Democracy and Education The Place of Subject Matter Dewey Today: An Assessment Summary Questions Introduction to the Literature 3 Analytic Philosophy Philosophical Analysis in Education The Analysis of Teaching Current Analyses of Teaching Summary Questions Introduction to the Literature 4 Continental Philosophy Existentialism Phenomenology Critical Theory Hermeneutics Postmodernism Summary Questions Introduction to the Literature 5 Logic and Critical Thinking Formal Logic Informal Logic McPeck's View of Critical Thinking An Alternative Approach Summary Questions Introduction to the Literature 6 Epistemology and Education Justified True Belief Foundationalism Truth Nonfoundational Theories of Knowledge Epistemology and Education Constructivism Summary Questions Introduction to the Literature 7 Philosophy of Social Science and Educational Research How Does Science Grow? A Debate in Educational Research Some Examples Summary Questions Introduction to the Literature 8 Ethics and Moral Education Pre-Enlightenment Ethics Enlightenment Ethics Utilitarianism Deweyan Ethics Moral Education Cognitive Developmentalism Summary Questions Introduction to the Literature 9 Social and Political Philosophy The Current Debate Justice and Equality in Education Summary Questions Introduction to the Literature 10 Problems of School Reform Equality Accountability Standards Testing Summary Questions Introduction to the Literature 11 Multiculturalism and Cosmopolitanism Multiculturalism Cosmopolitanism The Educator's Dilemma Summary Questions Introduction to the Literature 12 Feminism, Philosophy, and Education Feminist Critiques of Philosophy Epistemology Philosophy of Social Science Ethics Care and Education Summary Questions Introduction to the Literature NOTES BIBLIOGRAPHY INDEX