Sergey Antipov antipov@anl.gov Simulations Sergey Antipov antipov@anl.gov.

Slides:



Advertisements
Similar presentations
Chapter 20 Electricity.
Advertisements

Spring review.
Chapter 27 Current And Resistance Electric Current Electric current is the rate of flow of charge through some region of space The SI unit of current.
Dielectrics Experiment: Place dielectrics between plates of capacitor at Q=const condition Observation: potential difference decreases to smaller value.
Breakdown in Solid Dielectrics
Electric Potential Electric forces are conservative. Work done by an electric force is W=-q o Ed  U=-W.
1 Capacitance and Dielectrics Chapter 27 Physics chapter 27.
TOC 1 Physics 212 and 222 Circuit Elements and Electric Power Resistors Capacitors Inductors.
A Charged, Thin Sheet of Insulating Material
Phy 213: General Physics III
Capacitance Physics Department, New York City College of Technology.
A Charged, Thin Sheet of Insulating Material
Example: Potential Difference of Point Charges Consider a point charge q. What is the potential difference between point x 1 and point x 2 ? q x2x2 x1x1.
Average 68.4 Median Highest 100 Lowest 26 Section Section Section Section
1) If a 4-  F capacitor and an 8-  F capacitor are connected in parallel, which has the larger potential difference across it? Which has the larger.
Circuits Resistors, Capacitors and Inductors 1 Resistors Capacitors Inductors.
Slide 1 Electric Field Lines 10/29/08. Slide 2Fig 25-21, p.778 Field lines at a conductor.
Exam Average 78.4 Median 84 Outline Applications of Gauss’s Law - The single Fixed Charge -Field of a sphere of charge -Field of a.
Capacitance & Dielectrics
Mind Maps A mind map is a diagram used to represent words, ideas, tasks, or other items linked to and arranged around a central key word or idea.
Electricity Foundations of Physics. Electricity The movement of charge from one place to another Requires energy to move the charge Also requires conductors.
A basic property of the tiny particles that make up matter; it can be positive or negative: Some particles of matter have an electric charge. Electric.
Gauss’s Law The electric flux through a closed surface is proportional to the charge enclosed The electric flux through a closed surface is proportional.
Regents Physics Circuits Unit Part I Resistivity and Ohm’s Law.
1 EEE 498/598 Overview of Electrical Engineering Lecture 3: Electrostatics: Electrostatic Potential; Charge Dipole; Visualization of Electric Fields; Potentials;
Electric Current and Ohm’s Law
1 Electric Potential Reading: Chapter 21 Chapter 21.
Electricity! It’s Shocking!!. Remember the electron??
Physics 2112 Unit 4: Gauss’ Law
 The continuous flow of electrons is current.  Measured in amps (A).  Two types of current 1. Direct current (DC) – electrons flow in only one direction.
Capacitanc e and Dielectrics AP Physics C Montwood High School R. Casao.
Chapter 4 Overview. Maxwell’s Equations Charge Distributions Volume charge density: Total Charge in a Volume Surface and Line Charge Densities.
Electric Current & Electric Circuits. The movement of electrically charged particles is an electric current. The SI unit for electric current is ampere.
N. Sassaman SAMS Electric Charge and Static Electricity  Charges that are the same repel each other. Charges that are different attract each.
Electric Current and Ohm’s Law Sec Electric Current electric current – continuous flow of electric charge electric current – continuous flow of.
Chapter 26 Lecture 21: Current: I. Types of Capacitors – Variable Variable capacitors consist of two interwoven sets of metallic plates One plate is fixed.
Lesson 5 Current and Resistance  Batteries  Current Density  Electron Drift Velocity  Conductivity and Resistivity  Resistance and Ohms’ Law  Temperature.
Electric Current.  Electric current is the continuous flow of electric charges through a material.  Needed to power any electrical device.  Measured.
Electrochemical Science and Technology: Fundamentals and Applications, Keith B. Oldham, Jan C. Myland and Alan M. Bond. © 2011 John Wiley & Sons, Ltd.
Electricity on the Move. Current Electricity Unlike static electricity, which does not move except when discharged, current electricity is a continuous.
Sergey Antipov Argonne Wakefield Accelerator group Z. Insepov, V. Ivanov The Direction of the E-field in Glass Pores.
 The opposition of a material to the flow of charge through it.  Measured in ohms (  ).
Definitions. Electricity Electric Current Current Direction The current direction is from positive to negative but the electron direction is from negative.
Simulation geometry 2000 V terminal Vacuum Glass substrate, ε = 5.8 Resistive coating, ε = 6.8 and σ = 1e-8 S/m The pore has a 40μ diameter and 40:1 aspect.
Electric Fields and Potential. Electric Fields Every electric charge is surrounded by an electric field – the area around an electric charge where electric.
Development of Large-Area Photo-detectors: MCP development S. Antipov, Z. Insepov, V. Ivanov Abstract Electric field inside high gain microchannel plate.
Chapter 25 Capacitance In this chapter we will cover the following topics: -Capacitance C of a system of two isolated conductors.
Chapter 25 Capacitance In this chapter we will cover the following topics: -Capacitance C of a system of two isolated conductors.
Figure 10.1 Figure 10.1 An example illustrating the application of Faraday’s law to the case of a constant magnetic flux density B and a moving path. The.
Question 300 V/m 0 V/m 300 V/m A B 0.02m 0.03m 0.04m What is VB-VA?
-Atomic View of Dielectrics -Electric Dipole in an Electric Field -Partially Filled Capacitors AP Physics C Mrs. Coyle.
THINGS REMOVED. THINGS REMOVED Introducing the concept of inertial forces to explain the forces in non-inertial frames.
Lecture 01: Electric Fields & Forces
CAPACITANCE SENSOR.
Capacitors Calculating capacitance Energy stored in a capacitor
Lecture 5 : Conductors and Dipoles
Development of Large-Area Photo-detectors:
ENE/EIE 325 Electromagnetic Fields and Waves
Eng. Mohamed Ossama Ashour
Moving Conductors in Magnetic Fields
An insulating spherical shell has an inner radius b and outer radius c
A long straight conducting wire of length L and mass m carries a current I. The conductor is near the surface of the earth, in a uniform magnetic field.
Charged Isolated Conductor
Microstrip Patch Antennas S.Mahendrakumar Asst. Prof. (Sl. Gr.) / ECE VCET.
Electricity Review CH
Insulators and Conductors
The field lines for a positive point charge
Chapter 25 Capacitance-II
Electric Current and Ohm’s Law
Electricity Electric Current.
Presentation transcript:

Sergey Antipov antipov@anl.gov Simulations Sergey Antipov antipov@anl.gov

Simulation geometry 2000 V 24 μ insulation Conductor thickness is 1 μ Pore length is 480 μ (20:1) Background ε=4, inside the pore ε=1. Shell conductivity - varies ground

results 127 MΩ resistance of a single pore Question: Is quoted number of 100 MΩ for a single pore or the whole assembly. How many pores are there? Streamlines – electric field. Color of the streamline corresponds to the magnitude of Ez. For a low conductivity (high resistance) pore does not change the direction of electric field much. z

Zoom in 127 MΩ Streamlines – electric field. Refraction of the field lines corresponds to the difference in dielectric constant of a substrate (ε=4) and the pore (air/vacuum)

Previous case with 1012 times lower resistance For an extremely high values of conductivity (low resistance = short) pore forces electric field to align Streamlines – electric field.

6 pores 127 MΩ each Streamlines – electric field.