'Field emission' presentation slideshows

Design and Operating Experience with SNS Superconducting Linac

Design and Operating Experience with SNS Superconducting Linac. FNAL September 30, 2010 Sang-ho Kim SCL Area Manager SNS/ORNL. Machine layout. Accumulator Ring: Compress 1 msec long pulse to 700 nsec. Chopper system makes gaps. 945 ns. mini-pulse. Current. Current. 1 ms macropulse.

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An ab-initio Study of the Growth and the Field Emission of CNTs : Nitrogen Effect

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Presentation at National Center for Theoretical Sciences & National Cheng Kung University

First-principles study of chemically modified carbon nanotubes. Jijun Zhao. State Key Laboratory of Materials Modification by Laser, Electron, and Ion Beams & College of Advanced Science and Technology Dalian University of Technology. Presentation at National Center for Theoretical Sciences

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DC breakdown measurements

DC breakdown measurements . Sergio Calatroni Present team: Gonzalo Arnau Izquierdo, Jan Kovermann, Chiara Pasquino, Rocio Santiago Kern, Helga Timko, Mauro Taborelli, Walter Wuensch. Outline. Experimental setup Typical measurements Materials and surface preparations

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Carbon Nanotube An Old Thing With New Name ?

Carbon Nanotube An Old Thing With New Name ?. Carbon nanotube ?. C60-FULLERENE SINGLE WALL NANOTUBE. Carbon Nanotube Technology. Single Walled Carbon Nanotube SWNT. Multi Walled Carbon Nanotube MWNT. Fullerene Cap. 10-200 nm. 1.2 nm. Properties of Interest.

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Carbon Nanotubes

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Activities at LANL in the Field of High Power Superconducting Proton Linac Structures

Activities at LANL in the Field of High Power Superconducting Proton Linac Structures. T. Tajima and F.L. Krawczyk Los Alamos Neutron Science Center (LANSCE) LA-UR-05-3224. Outline. Accelerator Production of Tritium (APT) Project 100-170 MW (1.0-1.7 GeV, 100 mA) Proton Linac

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438 views • 24 slides

J. D. Jarvis, H. L. Andrews, C. A. Brau, J. Driscol, B. Ivanov, C. L. Stewart, and K. Varga

Field-Emission Cathodes for Free-Electron Lasers. J. D. Jarvis, H. L. Andrews, C. A. Brau, J. Driscol, B. Ivanov, C. L. Stewart, and K. Varga Department of Physics and Astronomy Y. M. Wong, B. K. Choi, J. Davidson, & W. Kang Department of Electrical and Computer Engineering.

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2.2 Transport Parameters of Operational Gas Mixtures

2.2 Transport Parameters of Operational Gas Mixtures. Introduction. Particle physics experiments rely on the detection of charged and neutral particles by gaseous electronics. A suitable gas mixture within an electric field between electrodes detects charged particles.

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Experience with the 112 MHz 4K SRF Gun for CeC PoP at RHIC

Experience with the 112 MHz 4K SRF Gun for CeC PoP at RHIC. Kevin Smith TTC Meeting at TRIUMF February 6, 2019. Presentation Outline. A Mercifully Brief Overview of CeC PoP Experiment at RHIC (BNL) A Less Brief Overview of the 112 MHz SRF Gun Structure

677 views • 18 slides

A little physics about breakdown in HPRF cavities

A little physics about breakdown in HPRF cavities. Jefferson Lab MAP Meeting Feb 28, 2011. Three Topics: 1. Frequency shifts down during discharge. 2. Frequency shifts up during discharge. 3. Multiple discharge surprise. Postulated theory of breakdown in a HPRF cavity without beam.

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Flat Panel Displays --- Principles, Materials and Processes Jing Zhang 04/06/2004

Flat Panel Displays --- Principles, Materials and Processes Jing Zhang 04/06/2004. Outline. CRT (Cathode Ray Tube) Displays Flat Panel Displays - Classification; - Liquid Crystal Displays; - Basic Principles; - Addressing Issues; - Modified LCD

289 views • 18 slides

5 MeV Mott Measurement

5 MeV Mott Measurement. Overview: polarized electrons Mott scattering injector polarimeter training & qualification. for CEBAF Operations group Joe Grames, Marcy Stutzman February 14 th , 2007. Sir Nevill F. Mott at the ceremony with his Nobel Prize for Physics, 1977. ( N + - N - ).

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Carbon nanotube based devices

1.06k views • 10 slides

High Power Test of Single Cell SW Structure at SLAC 070214 T. Higo, Y. Higashi

High Power Test of Single Cell SW Structure at SLAC 070214 T. Higo, Y. Higashi. ILC ??????? SLAC ????? ?? ?? Megasonic Rinsing ? Dark Current / Break Down ????? Why: ?????? Copper film ?? CMP (Chemical Mechanical Planarisation) Megasonic ??? nm ???? particles ??

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Diamond Nanowires for UV Detection

Diamond Nanowires for UV Detection.

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Cavity Diagnostic System for the Vertical Test of the STF Baseline 9-Cell Cavity at KEK

Cavity Diagnostic System for the Vertical Test of the STF Baseline 9-Cell Cavity at KEK. Y. Yamamoto, H. Hayano, E. Kako, S. Noguchi, M. Sato, T. Shishido, K. Umemori, K. Watanabe(KEK), H. Sakai, K. Shinoe(ISSP, Univ. of Tokyo), S.I. Moon(POSTEC) and Q.J. Xu(IHEP). Introduction

182 views • 1 slides