Vacuum Solutions for Ion Thruster Testing
|
|
|
- Barnard Quinn
- 5 years ago
- Views:
Transcription
1 Vacuum Solutions for Ion Thruster Testing Stefan Lausberg Application & Product Support VA 1.2 Mon 9:45 H25 DPG-Frühjahrstagung Regensburg 2016 Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
2 Vacuum Solutions for Ion Thruster Testing 1 Ion Thruster Testing - Requirements 2 Standard Cryopumps 3 Cryo Panels for Ion Thrusters 4 Vacuum Systems for Thruster Testing Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
3 Vacuum Solutions for Ion Thruster Testing 1 Ion Thruster Testing - Requirements 2 Standard Cryopumps 3 Cryo Panels for Ion Thrusters 4 Vacuum Systems for Thruster Testing Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
4 Ion Thruster Testing - Requirements Q.: Why ion thrusters? Why Xe? A.: - Keeping satellites in position - Moving space crafts to Mars, Jupiter and beyond Typical Parameters Xe flow 1 mg/s 10 mg/s process pressure mbar pumping speed 19'000 l/s 190'000 l/s TMP Diff Cryo pumping speed range (l/s) of high vacuum pumps TMPs are too small/expensive; rotor becomes hot through Xe pumping Diffusion pump oil contaminates Xe thrusters standard cryopumps have less than 50 % of their nominal pumping speed for Xe Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
5 Vacuum Solutions for Ion Thruster Testing 1 Ion Thruster Testing - Requirements 2 Standard Cryopumps 3 Cryo Panels for Ion Thrusters 4 Vacuum Systems for Thruster Testing Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
6 Condensing gases saturation vapour pressure p (mbar) 20 K 80 K condensation temperatures Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
7 Standard Cryopumps - Working Principle Vacuum chamber old OLV cryopump model K Activated charcoal 80 K condensed at higher temperatures (H 2 O, CO 2 ) condensed at low temperatures (N 2, Ar, Xe, O 2 ) adsorbed on activated charcoal (H 2, He, Ne) Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
8 Efficiency of the cryopump H 2 O molar mass (g/mol) S / A (l/s*cm 2 ) mean velocity c (m/s) H , He 4 31, H 2 O 18 14,7 587 N ,8 471 Ar ,9 394 Xe ,4 217 N 2 nominal pumping speed 10'000 l/s for nitrogen =. = '600 l/s for xenon Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
9 Vacuum Solutions for Ion Thruster Testing 1 Ion Thruster Testing - Requirements 2 Standard Cryopumps 3 Cryo Panels for Ion Thrusters 4 Vacuum Systems for Thruster Testing Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
10 Cryogenic Options for Xenon Pumping DN 500 ISO-K Ø 520 DN 160 ISO-K COOLPOWER 140 T + cryo panel 10'300 l/s for xenon Standard cryopump 4'600 l/s for xenon Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
11 Design of Cryo Panel chamber wall cold head Ni-plated copper Xenon gas from thruster heater (at room temperature) MLI Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
12 Theoretical Pumping Speed for Xe S = A K 3,64 α c T G M p K 1- α c p G T G T K p G = process pressure p K = saturation vapour pressure T G = gas temperature T K = temperature of cryo panel (K) S = pumping speed of cryo panel (l/s) A K = area of cryo-panel in (cm 2 ) α C = Sticking coeffizient M = molar mass ( g/mol ) For p G >> p K, α c 1 S = 3.64 * A * / Xenon (M = g/mol; T G = 293 K) S/A = 5.44 l/s cm 2 Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
13 Theoretical Pumping Speed for Xe 6 5 S (l/s*cm 2 ) mbar 56 K T (K) 10-6 mbar Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
14 Theoretical Pumping Speed for Xe 6 5 S (l/s*cm 2 ) mbar 60 K T (K) 10-6 mbar 10-5 mbar Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
15 Theoretical Pumping Speed for Xe 6 5 S (l/s*cm 2 ) mbar 65 K T (K) 10-6 mbar 10-5 mbar 10-4 mbar Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
16 Theoretical Pumping Speed for Xe 6 5 S (l/s*cm 2 ) K 53 K T (K) 10-5 mbar Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
17 COOLPOWER 140 T Load Map required temperature range for xenon Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
18 COOLPOWER 140 T Thermal Load Calculation maximum load at 45 K for CP 140 T: Q th ~ 85 W surrounding temperature: T = 300 K very thick Xenon layers: ε r ~ 0.9 Thermal law of radiation: Q th = σ T 4 A 0 ε r 1 Q th / A = W / cm 2 max. surface of cryopanel: A ~ 85 / cm 2 ~ 2,100 cm 2 pumping speed: S Xe ~ 2, l/s ~ 11,400 l/s COOLVAC 10'000 icl: S Xe ~ 4,600 l/s Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
19 Cryo Panel measurement PMMA disc PNEUROP vessel mass spectrometer gas inlet hot cathode gauge metal disc silicon diode TMP + backing pump electrical heater electrical feedthrough 11'400 l/s - 10 % to helium compressor 10'300 l/s safety margin cold head motor cable Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
20 Cryo Panel vs Standard Cryopump no additional high vacuum pumps required heating of the first stage to prevent xenon hangup is necessary or severe reduction of baffle temperature while enhancing the corresponding cooling capacity is necessary low capacity of hydrogen and helium (TMP infinite "capacity") simple concept - much larger pumping speed in comparison to standard cryo pumps usually more pumping speed per Euro in comparison to standard cryo pumps no capacity issue concerning hydrogen and helium due to use of TMPs additional high vacuum pumps (usually TMP) are needed Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
21 Vacuum Solutions for Ion Thruster Testing 1 Ion Thruster Testing - Requirements 2 Standard Cryopumps 3 Cryo Panels for Ion Thrusters 4 Vacuum Systems for Thruster Testing Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
22 Vacuum Systems for Thruster Testing Simulation Chamber Typical configuration Chamber Shroud pumping speed (l/s) 6200 chamber volume (l) dia.: 5100 chamber size? material / desorption rate? heat? Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
23 Vacuum diagram for a 1.5 m³ Chamber T p COOLPOWER 140 T T COOLPAK 6000 H p MAG 2800 WSU 251 Unistat -65 C +80 C D 65 B Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
24 Thank you for your attention Our booth: No. 108 (Tent) Oerlikon Leybold Vacuum DPG-Frühjahrstagung Regensburg Stefan Lausberg
Lecture 3 Vacuum Science and Technology
Lecture 3 Vacuum Science and Technology Chapter 3 - Wolf and Tauber 1/56 Announcements Homework will be online from noon today. This is homework 1 of 4. 25 available marks (distributed as shown). This
MOLECULAR SURFACE PUMPING: CRYOPUMPING
51 MOLECULAR SURFACE PUMPING: CRYOPUMPING C. Benvenuti CERN, Geneva, Switzerland Abstract Weak van der Waals attractive forces may provide molecular gas pumping on surfaces cooled at sufficiently low temperatures.
ION Pumps for UHV Systems, Synchrotrons & Particle Accelerators. Mauro Audi, Academic, Government & Research Marketing Manager
ION Pumps for UHV Systems, Synchrotrons & Particle Accelerators Mauro Audi, Academic, Government & Research Marketing Manager ION Pumps Agilent Technologies 1957-59 Varian Associates invents the first
On the Emissivity of Silver Coated Panels, Effect of Long Term Stability and Effect of Coating Thickness
JET P(98)57 P A eladarakis W Obert On the Emissivity of Silver Coated Panels, Effect of Long Term Stability and Effect of Coating Thickness This document is intended for publication in the open literature.
( KS A ) (1) , vapour, vapor (USA) , saturation vapour pressure. , standard reference conditions for gases. , degree of saturation
( KS A 3014-91 ) (1), standard reference conditions for gases 0, 101325 Pa (1 =760mmHg ), vacuum, low ( rough ) vacuum 100Pa, medium vacuum 100 01 Pa, high vacuum 01 10 5 Pa, ultra high vacuum ( UHV )
Vacuum Pumps. Two general classes exist: Gas transfer physical removal of matter. Mechanical, diffusion, turbomolecular
Vacuum Technology Vacuum Pumps Two general classes exist: Gas transfer physical removal of matter Mechanical, diffusion, turbomolecular Adsorption entrapment of matter Cryo, sublimation, ion Mechanical
VACUUM PUMPING METHODS
VACUUM PUMPING METHODS VACUUM PUMPS (METHODS) Positive Displacement Vacuum Gas Transfer Vacuum Kinetic Vacuum Entrapment Vacuum Adsorption Reciprocating Displacement Rotary Drag Fluid Entrainment Ion Transfer
Vacuum. Residual pressure can thwart the best cryogenic design. Each gas molecule collision carries ~kt from the hot exterior to the cold interior.
Vacuum Residual pressure can thwart the best cryogenic design Each gas molecule collision carries ~kt from the hot exterior to the cold interior. 1 millitorr = 3.5x10¹³/cm³ Gas atoms leaving the hot surfaces
Vacuum techniques (down to 1 K)
Vacuum techniques (down to 1 K) For isolation (deep Knudsen regime) liquid helium dewar / inner vacuum jacket Leak testing at level 10-11 Pa m3/s (10-10 mbar l/s) liquid helium dewar & transfer syphon
Vacuum gas dynamics investigation and experimental results on the TRASCO-ADS Windowless Interface
Vacuum gas dynamics investigation and experimental results on the TRASCO-ADS Windowless Interface P. Michelato, E. Bari, E. Cavaliere, L. Monaco, D. Sertore; INFN Milano - LASA - Italy A. Bonucci, R. Giannantonio,
The Vacuum Case for KATRIN
The Vacuum Case for KATRIN Institute of Nuclear Physics, Forschungszentrum Karlsruhe,Germany, for the KATRIN Collaboration Lutz.Bornschein@ik.fzk.de The vacuum requirements of the KATRIN experiment have
DEPOSITION OF THIN TiO 2 FILMS BY DC MAGNETRON SPUTTERING METHOD
Chapter 4 DEPOSITION OF THIN TiO 2 FILMS BY DC MAGNETRON SPUTTERING METHOD 4.1 INTRODUCTION Sputter deposition process is another old technique being used in modern semiconductor industries. Sputtering
Ultra-High Vacuum Technology. Sputter Ion Pumps l/s
Ultra-High Vacuum Technology 30-400 l/s 181.06.01 Excerpt from the Product Chapter C15 Edition November 2007 Contents General General..........................................................................
Microscopy Cryostat System
OF AMERICA, INC. Microscopy Cryostat System RC102-CFM Microscopy Cryostat offers fast cooldown, high efficiency, lowest thermal drift, excellent temperature stability and ultra low vibration Optical cryostat
NEXTorr HV 100 HIGHLIGHTS
NEXTorr HV 100 HIGHLIGHTS General Features High pumping speed for all active gases Pumping speed for noble gases and methane High sorption capacity and increased lifetime Constant pumping speed in HV and
Previous Lecture. Electron beam lithoghraphy e - Electrons are generated in vacuum. Electron beams propagate in vacuum
Previous Lecture Electron beam lithoghraphy e - Electrons are generated in vacuum Electron beams propagate in vacuum Lecture 6: Vacuum & plasmas Objectives From this vacuum lecture you will learn: What
Ion Pump Applications
Gamma Vacuum Gamma Vacuum designs, manufactures, and services ion pumps, titanium sublimation pumps, and their controls. We have grown to be an industry leading ion pump supplier through superior quality,
Lecture 4. Ultrahigh Vacuum Science and Technology
Lecture 4 Ultrahigh Vacuum Science and Technology Why do we need UHV? 1 Atmosphere = 760 torr; 1 torr = 133 Pa; N ~ 2.5 10 19 molecules/cm 3 Hertz-Knudsen equation p ZW 1/ 2 ( 2mk T) At p = 10-6 Torr it
System for Continuous Chemical and Isotopic Purification of Hydrogen for the MuCap Experiment
MuCF07 System for Continuous Chemical and Isotopic Purification of Hydrogen for the MuCap Experiment A.A. Vasilyev a, I.A. Alekseev a, O.A. Fedorchenko a, V.A. Ganzha a, M. Hildebrandt b, P. Kammel c,
An Investigative Review on Cryosorption Pumps - Development and Application
An Investigative Review on Cryosorption Pumps - Development and Application Vismay.K.G #1, Vinay.K.B *2 # PG Student, Department of Mechanical Engineering, Vidyavardhaka College of Engineering, Mysuru
Continued Work toward XHV for the Jefferson Lab Polarized Electron Source
Continued Work toward XHV for the Jefferson Lab Polarized Electron Source Marcy Stutzman, Philip Adderley, Matt Poelker Thomas Jefferson National Accelerator Facility Newport News, VA 23601 Thomas Jefferson
Vacuum for Accelerators
Vacuum for Accelerators Oswald Gröbner Baden, 22 September 2004 1) Introduction and some basics 2) Pumps used in accelerators 3) Desorption phenomena 4) Practical examples Oswald Gröbner, Retired from
. VOLUME 28, 1967, No.12
PH I LI PS TECHNIC'AL REVIEW '_...,. VOLUME 28, 1967, No.12 A fast, cryopump system for ultra-high vacuum A. Venema Now that pumps which have a high pumping speed at low pressure have been developed it
To move a particle in a (straight) line over a large distance
2.1 Introduction to Vacuum Technology 2.1.1 Importance of Vacuum Technology for Processing and Characterization Under partial vacuum conditions (pressures orders of magnitude below ambient atmospheric
Cryogenic Viscous Compressor Development and Modeling for the ITER Vacuum System
Cryogenic Viscous Compressor Development and Modeling for the ITER Vacuum System L. R. Baylor, C.N. Barbier, S. K. Combs, R.C. Duckworth, T.D. Edgemon, S. J. Meitner, M.P. Hechler, D.A. Rasmussen, R. Kersevan*,
Vacuum. Kai Schwarzwälder, Institut für Physik Universität Basel October 6 th 2006
Physics,, Technology and Techniques of the Vacuum Kai Schwarzwälder, Institut für Physik Universität Basel October 6 th 2006 Outline Introduction and basics Defintion of Vacuum Vacuum A vacuum is a volume
THIN FLEXIBLE POLYMER SUBSTRATES COATED BY THICK FILMS IN ROLL-TO-ROLL VACUUM
ARCOTRONICS INDUSTRIES SpA Via San Lorenzo, 19 40037 Sasso Marconi (BO) Italy Tel. (+39) 051939111 Fax (+39) 051840684 http://www.arcotronics.com THIN FLEXIBLE POLYMER SUBSTRATES COATED BY THICK FILMS
THERMAL-VACUUM TESTS OF THE AMAZONIA-1 SATELLITE TM PERFORMED AT INPE WITH SUCCESS
IAC-16- C2,7,9,x33007 THERMAL-VACUUM TESTS OF THE AMAZONIA-1 SATELLITE TM PERFORMED AT INPE WITH SUCCESS Almeida, J. S.*., Panissi, D. L., Santos, M.B. National Institute for Space Research - INPE Sao
CEA Saclay Seminar. Cryogenic Research for HTS Transmission Cables in Korea
CEA Saclay Seminar Cryogenic Research for HTS Transmission Cables in Korea Overview 10 min 10 kw Brayton Refrigerator 10 min He-LN 2 Heat Exchanger 15 min Cryogenic Design for Future 15 min April 22, 2016
Vacuum II. G. Franchetti CAS - Bilbao. 30/5/2011 G. Franchetti 1
Vacuum II G. Franchetti CAS Bilbao 30/5/2011 G. Franchetti 1 Index Creating Vacuum (continuation) Measuring Vacuum Partial Pressure Measurements 30/5/2011 G. Franchetti 2 Laminar flow Cold surface Diffusion
DESIGN AND COST ANALYSIS OF HEAT TRANSFER EQUIPMENTS
DESIGN AND COST ANALYSIS OF HEAT TRANSFER EQUIPMENTS Md. Khairul Islam Lecturer Department of Applied Chemistry and Chemical Engineering. University of Rajshahi. What is design? Design includes all the
Sputter Ion Pump (Ion Pump) By Biswajit
Sputter Ion Pump (Ion Pump) By Biswajit 08-07-17 Sputter Ion Pump (Ion Pump) An ion pump is a type of vacuum pump capable of reaching pressures as low as 10 11 mbar under ideal conditions. An ion pump
Generation of vacuum (pumps) and measurements
Generation of vacuum (pumps) and measurements Generation of vacuum (pumps): ᴥ pumping systems general considerations on their use and match with physical quantities introduced for the dimensioning of vacuum
Generation of vacuum (pumps): Vacuum (pressure) measurements:
Generation of vacuum (pumps) p and measurements Generation of vacuum (pumps): ᴥ pumping p systems general considerations on their use and match with physical quantities introduced for the dimensioning
3 A NEW FRENCH FACILITY FOR ION PROPULSION RESEARCH
- 567-3 EPC-95-86 3 A NEW FRENCH FACLTY FOR ON PROPULSON RESEARCH P. Lasgorceix, M. Raffin, J.C. Lengrand, M. Dudeck Laboratoire d'airothermique du CNRS - Meudon (France). Gbkalp Laboratoire de Combustion
Cryogenics for bolometric interferometry: The BRAIN experiment
Cryogenics for bolometric interferometry: The BRAIN experiment, P. de Bernardis, C. Giordano, S. Masi, S. Peterzen, A. Schillaci Università di Roma, La Sapienza Bolometric Interferometry for the B-mode
CapaciTorr HV 200 HIGHLIGHTS
CapaciTorr HV 200 General Features High pumping speed for all active gases High sorption capacity and increased lifetime Costant pumping speed in HV, UHV and XHV Reversible pumping of hydrogen and its
Supporting Information
Supporting Information Unprecedented activation and CO 2 capture properties of an elastic single-molecule trap Mario Wriedt, a Julian P. Sculley, b Wolfgang M. Verdegaal, b Andrey A. Yakovenko b and Hong-Cai
UHV - Technology. Oswald Gröbner
School on Synchrotron Radiation UHV - Technology Trieste, 20-21 April 2004 1) Introduction and some basics 2) Building blocks of a vacuum system 3) How to get clean ultra high vacuum 4) Desorption phenomena
CRYOGENIC SYSTEMS FOR INERTIAL FUSION ENERGY. CEA-Grenoble France DSM/DRFMC/SBT
CRYOGENIC SYSTEMS FOR INERTIAL FUSION ENERGY CEA-Grenoble France DSM/DRFMC/SBT D.Chatain JP. Périn, P.Bonnay, E.Bouleau, M.Chichoux, D.Communal, J.Manzagol, F.Viargues, D.Brisset, G. Paquignon, V.Lamaison.
High-Pressure Volumetric Analyzer
High-Pressure Volumetric Analyzer High-Pressure Volumetric Analysis HPVA II Benefits Dual free-space measurement for accurate isotherm data Free space can be measured or entered Correction for non-ideality
CapaciTorr HV Pumps. making innovation happen,together
CapaciTorr HV Pumps making innovation happen,together CapaciTorr HV HIGHLIGHTS General Features High pumping speed for all active gases High sorption capacity and increased lifetime Constant pumping speed
Association of H + with H 2 at Low Temperatures
WDS'11 Proceedings of Contributed Papers, Part II, 175 179, 011. ISBN 978--7378-185-9 MATFYZPRESS Association of with at Low Temperatures I. Zymak, P. Jusko, S. Roučka, D. Mulin, R. Plašil, and J. Glosík
A cryogenic detector for 222 Rn
A cryogenic detector for Rn M. Wojcik a, G. Zuzel b a) Institute of Physics, Jagellonian University, Cracow, Poland b) Max Planck Institute for Nuclear Physics, Heidelberg, Germany 1. Selected detection
Rough (low) vacuum : Medium vacuum : High vacuum (HV) : Ultrahigh vacuum (UHV) :
4. UHV & Effects of Gas Pressure 4.1 What is Ultra-high Vacuum (UHV)? 4.2 Why is UHV required for Surface Studies? 4.3 Exercises - Effects of Gas Pressure Vacuum technology has advanced considerably over
CHAPTER V. Thermal properties of materials at low temperatures
CHAPTER V Thermal properties of materials at low temperatures 1. Introduction The mechanical properties of materials were discussed in Chapter IV. In this chapter we shall discuss the thermal properties
Cold / sticky system. Vincent Baglin. CERN AT-VAC, Geneva
Cold / sticky system Vincent Baglin CERN AT-VAC, Geneva 1 Cold / sticky system?? Vacuum?? 2 Eureka?? 3 Cold / sticky system Outline 1. Cryopumping 2. Adsorption isotherms 3. Cryosorbers in cold systems
Physical Vapor Deposition
Physical Vapor Deposition EVAPORATION SPUTTERING Typically used for metallization of semiconductors. Both Evaporation & Sputtering are done in vacuum environments. Typically: y Evaporation Pressures are
Development of Background Flow Model of Hall Thruster Neutral Ingestion
Development of Background Flow Model of Hall Thruster Neutral Ingestion IEPC-2017-008 Presented at the 35th International Electric Propulsion Conference Georgia Institute of Technology Atlanta, Georgia
Modification In Charging Composition In Order To Arrive At Desired Circulation Composition In The Context Of Sorption Compressor Based J-T Cooler
Modification In Charging Composition In Order To Arrive At Desired Circulation Composition In The Context Of Sorption Compressor Based J-T Cooler R. N. Mehta, S. L. Bapat, M. D. Atrey Department of Mechanical
Repetition: Physical Deposition Processes
Repetition: Physical Deposition Processes PVD (Physical Vapour Deposition) Evaporation Sputtering Diode-system Triode-system Magnetron-system ("balanced/unbalanced") Ion beam-system Ionplating DC-glow-discharge
D- Charge Exchange Ionizer for the JINR Polarized Ion Source POLARIS
D- Charge Exchange Ionizer for the JINR Polarized Ion Source POLARIS V.P. Ershov, V.V.Fimushkin, G.I.Gai, L.V.Kutuzova, Yu.K.Pilipenko, V.P.Vadeev, A.I.Valevich Λ and A.S. Belov Λ Joint Institute for Nuclear
GP 50 2F HIGHLIGHTS General features High pumping speed for all active gases We support your innovation Constant pumping speed in HV and UHV pressure region No low pressure limitation (down to -12 Torr
The KATRIN experiment
The KATRIN experiment Status and SDS comissioning Philipp Chung-On Ranitzsch for the KATRIN collaboration Insitute for Nuclear Physics, Westfälische Wilhelms-Universität, Münster The KATRIN experiment
Progress in Testing of QM and FM HEMP Thruster Modules
Progress in Testing of QM and FM HEMP Thruster Modules IEPC-2013-274 Presented at the 33rd International Electric Propulsion Conference, The George Washington University Washington, D.C. USA A. Lazurenko
Flight Acceptance Testing of the Two JPL Planck Sorption Coolers
Flight Acceptance Testing of the Two JPL Planck Sorption Coolers D. Pearson 1, B. Zhang 1, M. Prina 1, C. Paine 1, G. Morgante 2, P. Bhandari 1, R. Bowman 1, and A. Nash 1 1 Jet Propulsion Laboratory Pasadena,
ProVac3D a TPMC program for complex vacuum systems
ProVac3D a TPMC program for complex acuum systems X. Luo, S. Varoutis, H. Haas, S. Hanke and C. Day INSTITUTE FOR TECHNICAL PHYSICS - VACUUM DEPARTMENT TIMO Peter Ginter KIT Uniersity of the State of Baden-Wuerttemberg
The vacuum insulated transfer lines for CMS CO 2 cooling: performances and lessons learnt
The vacuum insulated transfer lines for CMS CO 2 cooling: performances and lessons learnt Forum on Tracker Detector Mechanics Bonn 23-26 May 2016 P. Tropea, J. Daguin, N. Frank, H. Postema today following
HiPace 300 with TC 400, DN 100 CF-F
HiPace 300 with TC 400, DN 100 CF-F HiPace 300 with TC 400, DN 100 CF-F Similar Image Rugged, powerful turbopump with a pumping speed of up to 260 l/s for N 2 Integrated TC 400 drive electronics Ideal
HiPace 300 with TC 110, DN 100 CF-F
HiPace 300 with TC 110, DN 100 CF-F HiPace 300 with TC 110, DN 100 CF-F Rugged, powerful turbopump with a pumping speed of up to 260 l/s for N 2 Integrated TC 110 drive electronics Ideal for UHV applications
Development Of An Experimental Setup For Emissivity Measurement At Cryogenic Temperatures
Development Of An Experimental Setup For Emissivity Measurement At Cryogenic Temperatures 1 Manjunath Hatti, 2 Srinivasan Kasthurirengan, 3 Thamme gowda C S 1 M Tech student, 2 Professor, 3 Assistant professor
Design and Properties of a Target for the MAGIX Experiment
Design and Properties of a Target for the MAGIX Experiment Silke Grieser Westfälische Wilhelms-Universität Münster, Institut für Kernphysik New Vistas in Low-Energy Precision Physics (LEPP), Mainz, April
Characterization of an adjustable magnetic field, low-power Hall Effect Thruster
Characterization of an adjustable magnetic field, low-power Hall Effect Thruster IEPC-2011-143 Presented at the 32nd International Electric Propulsion Conference, Wiesbaden Germany S. Oslyak 1, C. Ducci
Vacuum System of Synchrotron radiation sources
3 rd ILSF Advanced School on Synchrotron Radiation and Its Applications September 14-16, 2013 Vacuum System of Synchrotron radiation sources Prepared by: Omid Seify, Vacuum group, ILSF project Institute
Design and preliminary results of a prototype HTS SMES device
University of Wollongong Research Online Faculty of Informatics - Papers (Archive) Faculty of Engineering and Information Sciences 2005 Design and preliminary results of a prototype HTS SMES device Christopher
Quadrupole Mass Spectrometry Concepts. Mass spectrometers for residual gas analysis: Intermediate Level Users Guide
Quadrupole Mass Spectrometry Concepts Mass spectrometers for residual gas analysis: Intermediate Level Users Guide What does Residual Gas Analysis allow us to do? RGA is the examination of the molecular
Validated Design of the ITER Main Vacuum Pumping Systems
1 Validated Design of the ITER Main Vacuum Pumping Systems Chr. Day 1), A. Antipenkov 1), M. Dremel 1), H. Haas 1), V. Hauer 1), A. Mack 1), J.-C. Boissin 2), G. Class 3), D.K. Murdoch 4), M. Wykes 5)
BALKAN PHYSICS LETTERS Bogazici University Press 15 November 2016 BPL, 24, , pp , (2016)
139 BALKAN PHYSICS LETTERS Bogazici University Press 15 November 2016 BPL, 24, 241016, pp. 139 145, (2016) VACUUM STUDIES ON ELECTRON GUN AND INJECTOR LINE OF TARLA FACILITY E. COŞGUN, E.P. DEMİRCİ, Ö.
HiPace 1200, with TC 1200, DN 200 CF-F
HiPace 1200, with TC 1200, DN 200 CF-F HiPace 1200, with TC 1200, DN 200 CF-F Similar Image Powerful turbopump with a pumping speed of up to 1250 l/s for N 2 DN 200 CF-F flange for demanding UHV applications
Cryogenic Engineering
Cryogenic Engineering 2017 Fall Semester Min Soo, Kim Chapter 1. INTRODUCTION TO CRYOGENIC SYSTEMS 1.1 Introduction CRYOGENIC=CRYO+GENE Ice Generation CRYOGENICS REFRIGERATION -150 (123K) -40 (233K) 25
NEXTorr Z 100 HIGHLIGHTS
NEXTorr Z 00 HIGHLIGHTS General Features High pumping speed for all active gases Pumping speed for noble gases and methane Constant pumping speed for active gases in UHV-XHV No intrinsic pressure limitations
Earlier Lecture. In the earlier lecture, we have seen non metallic sensors like Silicon diode, Cernox and Ruthenium Oxide.
41 1 Earlier Lecture In the earlier lecture, we have seen non metallic sensors like Silicon diode, Cernox and Ruthenium Oxide. Silicon diodes have negligible i 2 R losses. Cernox RTDs offer high response
K n. III. Gas flow. 1. The nature of the gas : Knudsen s number. 2. Relative flow : Reynold s number R = ( dimensionless )
III. Gas flow. The nature of the gas : Knudsen s number K n λ d 2. Relative flow : U ρ d η U : stream velocity ρ : mass density Reynold s number R ( dimensionless ) 3. Flow regions - turbulent : R > 2200
Experimental Investigation of Hybrid System Pulse Tube and Active Magnetic Regenerator
Experimental Investigation of Hybrid System Pulse Tube and Active Magnetic Regenerator D. Kwon, I. Park, S. Jeong Cryogenic Engineering Laboratory, Mechanical Engineering Dept., School of Mechanical and
Russell B. Schweickart and Gary Mills
ANALYSIS AND TEST VERIFICATION OF TRANSITIONAL FLOW IN A DEWAR VENT Russell B. Schweickart and Gary Mills Ball Aerospace & Technologies Corp. Boulder, CO 80301 USA ABSTRACT The pressure of the cryogen
Measurements of temperature on LHC thermal models
Measurements of temperature on LHC thermal models Christine Darve 1, Juan Casas 2, Moyses Kuchnir 1 1 : Fermi National Accelerator Laboratory, Batavia, IL, USA 2 : CERN, European Laboratory for Particle
Characterization of the operation of RITs with iodine
Characterization of the operation of RITs with iodine IEPC-2017-368 Presented at the 35th International Electric Propulsion Conference Georgia Institute of Technology Atlanta, Georgia USA Waldemar Gärtner
PHYSICS HIGHER LEVEL
WARNING: You must return this section with your answer book otherwise marks will be lost. M 36 Write your examination number here. AN ROINN OIDEACHAIS AGUS EOLAÍOCHTA LEAVING CERTIFICATE EXAMINATION, 2001
RESEARCH ON TWO-STAGE ENGINE SPT-MAG
RESEARCH ON TWO-STAGE ENGINE SPT-MAG A.I. Morozov a, A.I. Bugrova b, A.D. Desiatskov b, V.K. Kharchevnikov b, M. Prioul c, L. Jolivet d a Kurchatov s Russia Research Center, Moscow, Russia 123098 b Moscow
Non-Evaporable Getters
Non-Evaporable Getters Dr. Oleg B. Malyshev Senior Vacuum Scientist ASTeC Vacuum Science Group, STFC Daresbury Laboratory, UK VS-2, 18-19 October 2011, Ricoh Arena, Coventry 1 Sorption and diffusion Gas
SHRI RAMSWAROOP MEMORIAL COLLEGE OF ENGG. & MANAGEMENT B.Tech. [SEM V (ME-51, 52, 53, 54)] QUIZ TEST-1 (Session: )
![SHRI RAMSWAROOP MEMORIAL COLLEGE OF ENGG. & MANAGEMENT B.Tech. [SEM V (ME-51, 52, 53, 54)] QUIZ TEST-1 (Session: )](/thumbs/78/78353407.jpg "SHRI RAMSWAROOP MEMORIAL COLLEGE OF ENGG. & MANAGEMENT B.Tech. [SEM V (ME-51, 52, 53, 54)] QUIZ TEST-1 (Session: )")
QUIZ TEST-1 Time: 1 Hour HEAT AND MASS TRANSFER Note: All questions are compulsory. Q1) The inside temperature of a furnace wall ( k=1.35w/m.k), 200mm thick, is 1400 0 C. The heat transfer coefficient
INTRODUCTION Strained Silicon Monochromator Magnesium Housing Windows for Monochromator Shutter and Collimator Fission Detector HOPG Monochromator
Design for a Four-Blade Neutron Interferometer INTRODUCTION Strained Silicon Monochromator The neutron beam used for this interferometer is separated from the NIST reactor's main beam using a strained
Thermal behavior and Energetic Dispersals of the Human Body under Various Indoor Air Temperatures at 50% Relative Humidity
Thermal behavior and Energetic Dispersals of the Human Body under Various Indoor Air Temperatures at 50% Relative Humidity Hakan CALISKAN Usak University, Department of Mechanical Engineering, Usak, Turkey
HEAT TRANSFER. Mechanisms of Heat Transfer: (1) Conduction
HEAT TRANSFER Mechanisms of Heat Transfer: (1) Conduction where Q is the amount of heat, Btu, transferred in time t, h k is the thermal conductivity, Btu/[h ft 2 ( o F/ft)] A is the area of heat transfer
An Improved Formulation for Calorimetric Emittance Testing. of Spacecraft Thermal Control Coatings
An mproved Formulation for Calorimetric Emittance Testing of Spacecraft Thermal Control Coatings Lonny R. Kauder NASA, Goddard Space Flight Center, Greenbelt, MD, 20771 Abstract Spacecraft often really
TURBOPUMPS. For perfect vacuum solutions to challenging applications
TURBOPUMPS For perfect vacuum solutions to challenging applications TURBOPUMPS The complete range 2 Contents Turbopumps... 4 For perfect vacuum solutions to challenging applications. 4 Bearing technologies...
Experiment and Simulation of plasma window
Experiment and Simulation of plasma window Kun Zhu,Sheng Huang, Wang shaoze, Yuarong, Zhiyu Guo Physics school of Peking university Institute of Heavy Ion Physics UCANS2015 outline Ø Introduction Ø Plasma
Influence of water on the total heat transfer in evacuated insulations
Bavarian Center for Applied Energy Research Influence of water on the total heat transfer in evacuated insulations Ulrich Heinemann ZAE Bayern, Würzburg, Germany ulrich.heinemann@zae.uni-wuerzburg.de 7
A pulse tube refrigerator below 2 K
Cryogenics 39 (1999) 865±869 A pulse tube refrigerator below 2 K M.Y. Xu *, A.T.A.M. De Waele, Y.L. Ju Department of Physics, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, The
PowerPoint Presentation by: Associated Technical Authors. Publisher The Goodheart-Willcox Company, Inc. Tinley Park, Illinois
Althouse Turnquist Bracciano PowerPoint Presentation by: Associated Technical Authors Publisher The Goodheart-Willcox Company, Inc. Tinley Park, Illinois Chapter 1 History and Fundamentals of Refrigeration
Development of high-efficiency Stirling cryocoolers for high temperature superconducting motors
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Development of high-efficiency Stirling cryocoolers for high temperature superconducting motors To cite this article: K Nakano
CuH-ZSM-5 as Hydrocarbon Trap under cold. start conditions
CuH-ZSM-5 as Hydrocarbon Trap under cold start conditions M. Navlani-García a, B. Puértolas b, D. Lozano-Castelló a, *, D. Cazorla-Amorós a, M. V. Navarro b, T. García b a Instituto Universitario de Materiales,
System design of 60K Stirling-type co-axial pulse tube coolers for HTS RF filters
System design of 60K Stirling-type co-axial pulse tube coolers for HTS RF filters Y. L. Ju, K. Yuan, Y. K. Hou, W. Jing, J. T. Liang and Y. Zhou Cryogenic Laboratory, Technical Institute of Physics and
10. 2 P R O B L E M S L I Q U I D S A N D G A S E S
South Pasadena AP Chemistry Name 10 States of Matter Period Date 10. 2 P R B L E M S L I Q U I D S A N D G A S E S 1. Use the following table to answer these questions. Vapor Pressures of Various Liquids
: HEAT TRANSFER & EVAPORATION COURSE CODE : 4072 COURSE CATEGORY : B PERIODS/ WEEK : 5 PERIODS/ SEMESTER : 70 CREDIT : 5 TIME SCHEDULE
COURSE TITLE : HEAT TRANSFER & EVAPORATION COURSE CODE : 4072 COURSE CATEGORY : B PERIODS/ WEEK : 5 PERIODS/ SEMESTER : 70 CREDIT : 5 TIME SCHEDULE MODULE TOPIC PERIODS 1 Conduction,Fourier law,variation
1. Electronic Structure 2. Electron Configuration 3. Core Notation 4. EC Relationship to Periodic Table 5. Electron Configuration of Ions
Pre-AP Chemistry 11 Atomic Theory II Name: Date: Block: 1. Electronic Structure 2. Electron Configuration 3. Core Notation 4. EC Relationship to Periodic Table 5. Electron Configuration of Ions Electronic
Noble Gas Control Room Accident Filtration System for Severe Accident Conditions (N-CRAFT)
E-Journal of Advanced Maintenance Vol.7-1 (2015) 34-42 Japan Society of Maintenology Noble Gas Control Room Accident Filtration System for Severe Accident Conditions (N-CRAFT) Axel HILL *1, Dr. Cristoph
Cryo Mezzanine Design and Requirements. David Montanari, Aurélien Diaz, Kevin Haaf LBNF Cryostat, final design review SURF, August 2017
Cryo Mezzanine Design and Requirements David Montanari, Aurélien Diaz, Kevin Haaf Cryostat, final design review SURF, 21-22 August 2017 Table of Content Who Am I and Where Have I Been? Proximity Cryogenics
Chapter 11. = 14.1 psi. = 28.7 in. Hg. 1 bar 1 atm 101, 325 Pascal 1000 mbar bar 1 atm 1 bar 1 atm 760 torr 1000 mbar 1.
ractice Exercises. psi = 70 mm Hg in. Hg = 70 mm Hg 4.7 psi 760 mm Hg 9.9 in. Hg 760 mm Hg = 4. psi = 8.7 in. Hg. ascals = 888 mbar torr = 888 mbar bar 0, 5 ascal 000 mbar.0 bar bar 000 mbar.0 bar = 666
H. J. Halama, H. C. Hseuh and T. S. Chou Accelerator Department Brookhaven National Laboratory Upton, New York 11973
Presented at the 1981 Cryogenic Engineering Conference, San Diego, California, August 10-14, 1981 BNL 30012 CRYOPUMPING OF HYDROGEN AMD HELIUM* H. J. Halama, H. C. Hseuh and T. S. Chou Accelerator Department