'Drift velocity' diaporamas de présentation

RECONSTRUCTION OF THE GAS EQUATION THE SOLUTION OF THE BOLTZMANN CONSTANT

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LLNL-PRES-638945

LLNL-PRES-638945. Computational Methods in the Warp Code Framework for Kinetic Simulations of Particle Beams and Plasmas. Alex Friedman 1 , Ronald H. Cohen 1 , David P. Grote 1 , Steven M. Lund 1 , William M. Sharp 1 , Jean-Luc Vay 2 , Irving Haber 3 , and Rami A. Kishek 3

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Electrical Transport BW, Chs 4 & 8; YC, Ch 5; S, Chs 4 & 5

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The Gunn Diode

The Gunn Diode. Contents Overview of The Gunn Diode Gunn Effect Two-Valley Model Theory Gunn-Oscillation Gunn Oscillation Modes. Overview of The Gunn Diode. What is it? The Gunn diode is used as local oscillator covering the microwave frequency range of 1 to 100GHz How it works?

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Fall 2004 Physics 3 Tu-Th Section

Fall 2004 Physics 3 Tu-Th Section. Claudio Campagnari Lecture 14: 16 Nov. 2004 Web page: http://hep.ucsb.edu/people/claudio/ph3-04/. Electrical Current. Electrical current is the net flow of electric charge in a material e.g., a wire Remember: a conductor contains free charges (electrons)

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Progress with the TPC gas monitor

Outline : Motivation Simulations Measurements Summary & Outlook. Progress with the TPC gas monitor. Dariusz Anto?czyk. Modifications. ALICE TPC Collaboration Meeting, Cagliari 16-17.05.2004 Progress with the TPC gas monitor Dariusz Anto?czyk. Motivation.

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Fig 27-CO, p.831

Fig 27-CO, p.831. Chapter 27: Current and Resistance 27.1 Electric Current. CT1: Which current is highest? CT2: Which current is lowest? CT3: Is current a vector a scalar neither P27.9 (p.769). Chapter 27: Current and Resistance 27.2 Resistance. R = ?V/I in Ohms (?).

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Charge in a constant uniform electric & magnetic field

Charge in a constant uniform electric & magnetic field. Section 22. We consider non-relativistic motion only. Then, p = m v Choose Z || H Choose X & Y so that H & E lie in the YZ plane. Z. B. E. Y. X. Z equation. Add X and Y equations. Time-averaged values.

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A model for pulsar nullings

A model for pulsar nullings. A. Kazbegi et al. 1996 A&A 309,515k. Introduction. Subpulse drift. Nulling and Phase Memory. Conclusion. 02. 01. 03. 04. Content. Introduction. Nulling phenomenon Subpulse drift Phase memory phenomenon. Model and difficulties Ruderman&Sutherland 1975

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TPC status report

Marian Ivanov. TPC status report. Outline. Planning tool Savannah bugs concerning TPC TPC reconstrunction status (Thursday 25 June 2009) ? TPC calibration/alignment using Kalman Filter ( Thursday 25 June 2009) ?. Planning tool.

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Announcements

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Chapter 27 Motion of Charged Particles in a Magnetic Field

Chapter 27 Motion of Charged Particles in a Magnetic Field. In the presence of electric field, the electrons experience electric forces and drift slowly in the opposite direction of the electric field at the drift velocity .

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Comparison of algorithms for hit reconstruction in the DTs:

Test of calibration code and v drift parametrization on TB2004 data. S.Bolognesi , G.Cerminara. Test of calibration procedures for t trig and drift velocity on Test Beam data. Comparison of algorithms for hit reconstruction in the DTs:. digi (time). recHit (distance).

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TOPIC 6 Electric current and resistance

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TPC Calibration with laser tracks

TPC Calibration with laser tracks. B. S. Nielsen & G. Renault for the ALICE Collaboration Niels Bohr Institute. Installation work on laser system. Installation work still to be done: Mount laser optics on TPC endcaps Build laser tent/hut in clean room

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Holes

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Pulse Shape Discrimination

Pulse Shape Discrimination. TK Hemmick. Ar-CO 2 Drift Velocity. Typical drift gap: 3 00 Volts 2 mm 1.5 kV/cm Drift Velocity 5 cm/ m sec 40 nsec duration Enlarge drift gap! 1 cm gap 200 nsec pulse duration. Background vs Signals. Photons and Neutrons Impulse response.

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Double beta decay TPC

Double beta decay TPC. High energy resolution of less then 1% due to electron counting technique. GEANT4 simulation: tracks of double beta decay from Xe-136 in mixture Xe/CH 4 (70/30) at 0.3 atm. electron number per 2D-read-out cell.

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