Accelerator Technology II - RF, Power Supplies, Operations (poster session)

Title	Page
The SISSI Project: An Intense Secondary Ion Source Using Superconducting Solenoid Lenses	594
A. Joubert, E. Baron, C. Grunberg, J.D. Larson, W. Mittig, F. Ripouteau
Application of Carbon Fibre Composite Materials for the Collision Sections of Particle Accelerators	598
H. Betzold, G. Lippmann
Energy Compression System Design for the MIT-Bates Accelerator Center	601
J.B. Flanz, P.T. Demos, K.D. Jacobs, A. Zolfaghari
The Brookhaven ATF Low-Emittance Beam Line	604
X.J. Wang, H.G. Kirk
First-, Second-, and Third-Order Achromatic Bend Systems for Free-Electron Laser Applications	607
D.P. Rusthoi, E.A. Wadlinger
Commissioning Results of the LLUMC Beam Switchyard and Gantry	610
M.E. Schulze
SLIA Beam Line Design	613
J.J. Petillo, D.P. Chernin, C. Kostas, A. Mondelli
Induction Accelerator Test Module for HIF	616
A. Faltens
Plasma Lenses for SLAC Final Focus Test Facility	619
D. Betz, P. Chen, D. Cline, M. Gundersen, C. Joshi, T. Katsouleas, J. Norem, S. Rajagopalan, J. Rosenzweig, J.J. Su, R. Williams
Direct Observation of Plasma Wakefield Caused by a Train of LINAC Bunches	622
A. Ogata, T. Kobayashi, T. Kozawa, K. Nakajima, H. Nakanishi, Y. Nishida, H. Shibata, T. Ueda, Y. Yoshida, N. Yugami
The SSC Collider Beam Halo Scraper System	625
R. Soundranayagam, M.A. Maslov, N.V. Mokhov, I.A. Yazynin
Alignment of the SLC Final Focus System Using Beam Orbits	628
Y. Chao, P. Burchat, W. Kozanecki, F. LeDiberder, N. Toge
A Laser Alignment System for Low Beta Quadrupoles	631
C. Moore, H. Jostlein
Fiducialization of Magnets for the MIT-Bates SHR	634
M. Farkhondeh, S.P. Holmberg, W.W. Sapp, J.D. Zumbro
Efficiency and Frequency Stability in a High Power Microwave Gap	637
Y.Y. Lau, D.G. Colombant
Fields and Trajectories in the Magnicon	640
P. Tallerico, D. Rees
Proton Synchrotron RF Cavity Mode Damper Tests	643
W.R. Smythe, C.C. Friedrichs, L.S. Walling
A Chopper Driven 11.4-GHz Traveling-Wave RF Generator	646
G. Westenskow, J. Boyd, J. Haimson, T. Houck, B. Mecklenburg, D. Rogers, R. Ryne
High-Current Relativistic Klystron Amplifier Development for Microsecond Pulse Lengths	649
M.V. Fazio, B.E. Carlsten, R. Faehl, T.J. Kwan, D.G. Rickel, R.M. Stringfield, P.J. Tallerico
High-Power Radio-Frequency Binary Pulse-Compression Experiment at SLAC	652
T.L. Lavine, Z.D. Farkas, A. Menegat, R.H. Miller, C. Nantista, G. Spalek, P.B. Wilson
Ferrite Tuned Cavity as Possible Source of Bunched Beam Instability	655
M. Popovic
Amplification Studies of a Multi-Megawatt Two-Cavity X-Band Gyroklystron	658
W. Lawson, J. Calame, V.L. Granatstein, B. Hogan, P.E. Latham, W. Main, M.E. Read, M. Reiser, V. Specht, C.D. Striffler
Overview of the Superconducting Super Collider RF Systems	661
J.D. Rogers, J.H. Ferrell
Use of Ferrite-50 to Strongly Damp Higher Order Modes	664
D. Moffat, P. Barnes, J. Kirchgessner, H. Padamsee, D. Rubin, J. Sears, Q. Shu
Current Status of RF System for the SPring-8	667
K. Inoue, M. Hara, Y. Kawashima, T. Nakamura
Recycling of a LAMPF Klystron	670
P.J. Tallerico, R.L. Cady
A New Approach in Simulating RF Linacs Using a General, Linear Real-Time Signal Processor	672
A. Young, S.P. Jachim
Modeling of a 1700-MHz Cluster Cavity of Planar Triodes	675
D.E. Rees, C. Friedrichs
Prototype 500 MHz Planar RF Input Window for a B-Factory Accelerating Cavity	678
J. Kirchgessner, P. Barnes, R. Gerlack, D. Moffat, H. Padamsee, D. Rubin, Q.S. Shu
The AGS Booster High Frequency RF System	681
R.T. Sanders, P. Cameron, W. Eng, M.A. Goldman, E. Jablonski, D. Kasha, J. Keane, A. McNerney, M. Meth, M. Plotkin, M. Puglisi, A. Ratti, R. Spitz
A Fast Amplitude and Phase Modulated RF Source for AmPS	684
F.B. Kroes, E. Heine, T.G.B.W. Sluijk
Higher Order Mode Damping in a Pill Box Cavity	687
F. Voelker, G. Lambertson, R. Rimmer
RF Impedance Measurements of the Various Vacuum Chambers for the Advanced Photon Source (APS)	690
J.J. Song, J.F. Bridges, J.W. Howell, R.L. Kustom
Measurements on Prototype Cavities (352 MHz) for the Advanced Photon Source (APS)	693
J.F. Bridges, J.M. Cook, R.L. Kustom, J.J.H. Song
Calculation of Required Tuner Accuracy and Bandwidth With and Without Fast Feedback	696
S.R. Koscielniak
Analysis of Eddy Currents in the Walls of the Ferrite Tuned RF Cavity for the TRIUMF Kaon Factory Booster Synchrotron	699
I.B. Enchevich, M.J. Barnes, R.L. Poirier
Power-Combining and Injection-Locking Magnetrons for Accelerator Applications	702
T.A. Treado, T.A. Hansen, D.J. Jenkins
Performance Characteristics of the CEBAF Klystron Amplifier	705
E.W. McCune, R.A. Fickett
Development of 5-Cell RF Cavity for SPring-8 Booster Synchrotron	707
H. Suzuki, T. Harami, S. Kawazu, Y. Miyahara, T. Nagafuchi, M. Nakano, T. Rizawa, S. Satoh, Y. Tanabe, K. Yoshiyuki
Status Report on the ELETTRA R.F. System	710
A. Massarotti, G. D'Auria, A. Fabris, C. Pasotti, C. Rossi, M. Svandrlik
Component Development for X-Band above 100 MW	713
W.R. Fowkes, R.S. Callin, M. Studzinski
Comparison of SW and TW Non-Synchronous Accelerating Cavities as Used in Electron Beam Storage Rings	716
A. Zolfaghari, P.T. Demos, J.B. Flanz, K. Jacobs
A High Power Cross-Field Amplifier at X-Band	719
K. Eppley, J. Feinstein, K. Ko, N. Kroll, T. Lee, E. Nelson
A 2D Field Solver for Periodic Structures with Special Corner Elements	722
E. Nelson
Gated Field-Emission Cathodes for Microwave Devices	725
P.M. McIntyre, H.P. Demroff, S.M. Elliott, B. Lee, J.D. Legg, Y. Pang, D.L. Parker, M. Popovic, M.D. Stewart, M.H. Weichold, W. Yu, W.K. Yue
High Power X-Band Coaxial Amplifier Experiments	728
T.J. Davis, J.A. Nation
Studies of an X-Band Three-Cavity Gyroklystron with Penultimate Cavity Tuning	731
S. Tantawi, V.L. Granatstein, P.E. Latham, W. Lawson, W. Main, H. Matthews, C.D. Striffler
A Second Harmonic Amplifier for Accelerator Applications	734
P.E. Latham, W. Lawson, W. Main, C.D. Striffler
RF Breakdown Test of SiO2 Coated Copper Electrodes	736
D. Sun, P. Datte, F.R. Huson, W.W. MacKay
The AGS Booster Low Frequency RF System	739
R.T. Sanders, P. Cameron, W. Eng, M. Goldman, D. Kasha, A.J. McNerney, M. Meth, A. Ratti, R. Spitz
Bevalac Injector Final Stage RF Amplifier Upgrades	742
D. Howard, J. Calvert, R. Dwinell, J. Lax, A. Lindner, R. Richter, W. Ridgeway
RF Drivers for the Bevalac Injector Final Stage RF Amplifiers	745
D. Howard, J. Calvert, M. Hui, N. Kellogg, A. Lindner, W. Ridgeway, K. Woolfe
New Design Concepts for Ferrite-Tuned Low-Energy-Booster Cavities	748
G. Schaffer
Injection Locking of a Long-Pulse Relativistic Magnetron	751
S.C. Chen, G. Bekefi, R.J. Temkin
Cyclotron Autoresonance Maser (CARM) Amplifiers for RF Accelerator Drivers	754
W.L. Menninger, D.L. Birx, C. Chen, B.G. Danly, D.L. Goodman, K.D. Pendergast, R.J. Temkin
Analysis and Optimisation of RF Power-Klystrons by FCI-Code	757
E.-G. Schweppe, E. Demmel, S. Isagawa, H. Seifert, T. Shintake, M. Yoshida
Numerical Simulation of the SLAC X-100 Klystron Using RKTW2D	760
R.D. Ryne, A.E. Vlieks
250 GHz Cold Tests for the LLNL CARM Experiment	763
B. Kulke, M. Caplan, R. Stever
Test Results from the LLNL 250 GHz CARM Experiment	766
B. Kulke, D. Bubp, M. Caplan, T. Houck, N.C. Luhmann, Jr., D.B. McDermott, D. Rogers, D. Trimble, R. VanMaren, G. Westenskow
The Linac and Booster RF Systems for a Dedicated Injector for SPEAR	769
J.N. Weaver, S. Baird, M. Baltay, M. Borland, C. Chavis, L. Emery, R.D. Genin, R. Hettel, R.H. Miller, H. Morales, H.-D. Nuhn, J. Safranek, J. Sebek, J. Voss, D. Wang, H. Wiedemann, B. Youngman
A High-Power Free-Electron Maser for RF Acceleration	772
F. Hartemann, M. Bres, T.S. Chu, B.G. Danly, G. Faillon, G. Mourier, P. Papavaritis, R.J. Temkin, T. Trémeau
Fast Ferrite Tuner for the BNL Synchrotron Light Source	774
E. Pivit, S.M. Hanna, J. Keane
Copper Plating the Ground Test Accelerator RFQ	777
H. Mignardot, J. Uher
Idle Superconducting RF Cavities for Bunch Focusing	780
P. Marchand, L. Rivkin
Sliding Mode Controller for RF Cavity Tuning Loop	783
L.K. Mestha, K.S. Yeung
Accelerating Cavity Development for the Cornell B-Factory, CESR-B	786
H. Padamsee, P. Barnes, C. Chen, W. Hartung, M. Hiller, J. Kirchgessner, D. Moffat, R. Ringrose, D. Rubin, Y. Samed, D. Saraniti, J. Sears, Q.S. Shu, M. Tigner
Beam Impedance Measurements - Coaxial Wire Method	789
G. DiMassa, M.R. Masullo
A Simple Analytical Estimate of the Loss Parameter of a Large Tapered Chamber	792
J.J. Welch
Measurements of High-Temperature RF and Microwave Properties of Selected Aluminas and Ferrites Used in Accelerators	795
R.M. Hutcheon, F.P. Adams, P. Lucuta, J.E. McGregor, B.H. Smith, M.S. de Jong
100 MW Klystron Development at SLAC	798
A.E. Vlieks, R.S. Callin, G. Caryotakis, K.S. Fant, W.R. Fowkes, T.G. Lee, E.L. Wright
Computer Determination of HOM Damping for a Prototype JLC Accelerator Cavity and a Prototype B Factory Cavity	801
N.M. Kroll, R. Rimmer
SXLS RF Cavity and System	804
M. Thomas, R. Biscardi, R. D'Alsace, J. Keane, P. Mortazavi, J. Rose
Low Power RF System for the ALS Linac	807
C.C. Lo, H. Lancaster, B. Taylor
Initial Operating Experience with the Auxiliary Accelerating Cavity for the TRIUMF Cyclotron	810
R.E. Laxdal, K. Fong, G.H. Mackenzie, V. Pacak, J.B. Pearson, L. Root, M. Zach
CONDOR Simulation of an 11.4GHz Traveling Wave Output Cavity	813
Y. Goren, D. Yu
Switchable 10 Hz/1 Hz LEB Magnet Power Supply System	816
C. Jach
An RF Cavity for the B-Factory	819
R. Rimmer, M. Allen, J. Hodgeson, K. Ko, N. Kroll, G. Lambertson, R. Pendleton, H. Schwarz, F. Voelker
Survey and Alignment of an MLI Model 1.2-400 Synchrotron Light Source	822
W.J. Pearce
Correlation of Beam Loss to Residual Activation in the AGS	825
K.A. Brown
The Condition of -Ray Emission by Electrons Interacting with the Wall in Medium Energy Electron Storage Rings	828
Y. Gomei, M. Kawai
Gamma Ray Activation of the Fermilab Pbar Target	831
C.M. Bhat, J. Marriner
Recent Experience with Backgrounds at the SLC	834
R. Jacobsen, H. Band, T. Barklow, A. Bazarko, K. Brown, D. Burke, D. Coupal, H. DeStaebler, D. Fujino, C. Hearty, S. Hertzbach, J. Jaros, T. Maruyama, T. Tauchi, N. Toge, J. Turk, S. Wagner, C. Zeitlin
Analysis of Uptime Efficiency of the SLC as Measured by Pulse Accounting	836
P. Krejcik, D. Bernstein, A. Gromme, D. Ohman, N. Spencer
First Results of Proton Injection Commissioning of the AGS Booster Synchrotron	839
R.K. Reece, L. Ahrens, J. Alessi, E. Bleser, J.M. Brennan, A. Luccio, J. Skelly, A. Soukas, W.T. Weng, R. Witkover, W. van Asselt
Multi-Beamlet Injection to the RFQ1 Accelerator - A Comparison of ECR and Duopigatron Proton Sources	842
G.M. Arbique, T. Taylor, M.H. Thrasher, J.S.C. Wills
Beam Transmission and Emittance Measurements of the RFQ1 Accelerator	845
G.M. Arbique, B.G. Chidley, G.E. McMichael, W.L. Michel, J.Y. Sheikh
First Two Years Operational Experience with LEP	848
R. Bailey, T. Bohl, F. Bordry, H. Burkhardt, P. Collier, K. Cornelis, B. Desforges, A. Faugier, V. Hatton, H. Laeger, J. Miles, J. Poole, H. Schmickler, D. Vandeplassche, G. de Rijk
Accelerator Energy Conservation at Fermilab	851
J.P. Morgan
Designing High Energy Accelerators Under DOE's "New Culture" for Environment and Safety: An Example, the Fermilab 150 GeV Main Injector Proton Synchrotron	854
W.B. Fowler
Installation of the Superconducting Magnets in the HERA Tunnel	857
I. Borchardt, D. Brauer, S. Chermenin, D. Degèle, K. Escherich, H.J. Fiebig, H. Grabe, J. Holz, D. Hubert, R. Kus, M. Leenen, H. Maywald, O. Peters, B. Petersen, K. Pieczora, U. Riemer, Z. Sanok, P. Schmüser, S. Schollmeier, W. Schwarz, G. Tödten, D. Trines, S. Wolff
Stripping Foil Losses and Space Charge Blowup in the FNAL Booster	860
C. Johnstone, D. Bogert, J. Lackey, R. Tomlin
Fast Kicker Requirements for the SSC's Low and Medium Energy Boosters	863
M. Wilson, D. Anderson, C. Pappas, L. Schneider
A Pinger System for the Los Alamos Proton Storage Ring	866
T.W. Hardek, H.A. Thiessen
Electrical Performance of the Injection System Kickers at the Saskatchewan Accelerator Laboratory	869
C. Figley
PSR Switchyard Kicker System Improvements	872
T.W. Hardek
Slow Beam Extraction Experiments at TARN II	875
M. Yoshizawa, A. Ando, K. Chida, T. Hattori, M. Kanazawa, A. Mizobuchi, H. Muto, A. Noda, K. Noda, M. Tomizawa, J. Yoshizawa
A Triple-Isotope Injector for Accelerator Mass Spectrometry	878
R.J. Schneider, K.H. Purser, K.F. von Reden
Beam Induced Heating of Ferrite Magnets	881
W.K. van Asselt, Y.Y. Lee
On-Line Correction of Aberrations in Particle Spectrographs	884
M. Berz, K. Joh, J.A. Nolen, B.M. Sherrill, A.F. Zeller
The ELETTRA Linac to Storage Ring Transfer Line	887
D. Einfeld, R. Richter
Test and Calibration Beams at the Superconducting Super Collider	890
F. Stocker, H. Fenker, R. Schailey
Upgrade of LAMPF's 750-keV, H+ Transport	893
J.W. Hurd, A.A. Browman, M.J. Jakobson, K.W. Jones
User Control of the Proton Beam Injection Trajectories into the AGS Booster	896
T. D'Ottavio, J.G. Alessi, A. Kponou, A. Luccio, R.K. Reece, J. Skelly
Zero-Degree Injection Line for PILAC, the Proposed Los Alamos Pion Linac	899
B. Blind
The APS Transfer Line from Linac to Injector Synchrotron	902
R.K. Koul, E. Crosbie
Dispersion and Betatron Matching into the Linac	905
F.-J. Decker, C.E. Adolphsen, W.J. Corbett, P. Emma, I. Hsu, H. Moshammer, J.T. Seeman, W.L. Spence
Upgrade of the Main Ring Magnet Power Supply for the KEK 12 GeV Proton Synchrotron	908
H. Sato, S. Matsumoto, M. Mikawa, T. Sueno, T. Toda, T. Toyama
Correction Magnet Power Supplies for APS Machine	911
Y.G. Kang
Circuit Description of the Power Systems for Pulsed Septum Magnets at APS	914
D.G. McGhee
Design and Simulation of High Accuracy Power Supplies for Injector Synchrotron Dipole Magnets	917
M. Fathizadeh
Power Supply System for the TRIUMF KAON Factory	920
K.W. Reiniger
Problems with Tap-Changing Power Supplies	923
J. Budnick, R. Forgas
The 10 Hz Resonant Magnet Power Supply for the SSRL 3 GeV Injector	926
R. Hettel, R. Averill, M. Baltay, S. Brennan, C. Harris, M. Horton, C. Jach, J. Sebek, J. Voss
Magnet Power Supply as a Network Object	929
S. Cohen, R. Stuewe
Active Filter for the DESY III Dipole Circuit	932
W. Bothe
Precision Power Supply Control Module	935
N. Dobeck, B. Lamora, J. Larkin, M. O'Sullivan, C. Sharp
Measurements of Crowbar Performace of the 20 kV 130 A DC Power Supply of the TRIUMF RF System	938
A.K. Mitra
Transient Analysis of the AGS-Booster Ring Dipole and Qudrupole Magnet System	940
W. Zhang, A.V. Soukas, S.Y. Zhang
Operational Results of an Improved Regulator and Trigger System for the "Fast" Raster Scanning Power Supply System Constructed at the Bevalac Biomedical Facility	943
G. Stover, J. Halliwell, B. Ludewigt, M. Nyman, R. Stradtner
Precision Current Regulation of Multipole Magnets Using Commercial SMPS	946
C. Sibley, O. Calvo, T. Russ
Principles and Theory of Resonance Power Supplies	949
A. Sreenivas, G.G. Karady
Control Theory: A Practical Approach	952
M. Anderson, T. Bertuccio
Theoretical Study of H- Stripping with a Wiggler Magnet	955
R. Hutson
The AGS New Fast Extraction System for the g-2 Experiment and RHIC Injection	958
M. Tanaka, Y.Y. Lee
The Frascati -Factory Injection System	961
R. Boni, S. Kulinski, M. Preger, B. Spataro, M. Vescovi, G. Vignola
Prototype Studies of a 1 MHz Chopper for the KAON Factory	964
G.D. Wait, M.J. Barnes, D. Bishop, C.B. Figley, G. Waters
Results of Calculations on the Beam Deflection Due to the 1 MHz Chopper for the Kaon Factory	967
M.J. Barnes, G.D. Wait
Construction of a New Tevatron Collider Beam Abort Dump	970
B. Hanna, C. Crawford
The SSRL Injector Kickers	973
H.-D. Nuhn, R. Boyce, J. Cerino, T. Hostetler
Design and Performance of the Traveling-Wave Beam Chopper for the SSRL Injector	976
M. Borland, R. Anderson, M. Baltay, L. Emery, A.S. Fisher, P. Golceff, R. Hettel, R.H. Miller, H. Morales, J. Sebek, J.N. Weaver, H. Wiedemann, B. Youngman
Electrostatic Deflector Development - At the Chalk River Superconducting Cyclotron	979
W.T. Diamond, J. Almeida, G.R. Mitchel, H. Schmeing
The Proposed Injection System for an Asymmetric B Factory in the PEP Tunnel	982
E. Bloom, W. Barletta, F. Bulos, G. Loew, T. Mattison, R. Miller, B. Sukiennicki
HEB to Superconducting Super Collider Transfer Lines	985
F. Wang, R. Schailey
The ELETTRA Gun Trigger Module	988
G.R. Aiello, M. Bossi
POISSON Study of Electrostatic Septa for the MIT-Bates SHR	990
M. Farkhondeh
The Ultra-Fast Injection Kicker for SXLS	993
T.J. Romano, R. Heese
SLC Kicker Magnet Limitations	996
R. Cassel, G. Bowden, F. Bulos, A. Donaldson, D. Fiander, T. Mattison, J. Weaver
The Booster-to-AGS Beam Transfer Fast Kicker Modulators	999
W. Zhang, J. Bunicci, W.W. Frey, A.V. Soukas, S.Y. Zhang
On the Design of Beam Absorbers for the SSC	1002
B. Parker
Thyristor Converter Simulation and Analysis	1005
S.Y. Zhang
Applications of the Hot Isostatic Pressing (HIP) for High Gradient Accelerator Structure	1008
H. Matsumoto, M. Akemoto, H. Hayano, A. Miura, T. Naito, S. Takeda
X-Band Accelerating Structure for Japan Linear Collider	1011
T. Higo, K. Kubo, M. Takao, K. Takata
Method of Longitudinal Impedance Measurement for Accelerator Elements in Wide Frequency Region Using Double Fourier Transform	1014
P. Reinhardt-Nikulin, S. Bragin, N. Ilinsky
Prototype of the Accelerating Resonator for the Superconducting Sector Deuteron Cyclotron	1017
N.V. Vasiliev, A.A. Glazov, V.A. Kochkin, D.L. Novikov, E.N. Zaplatin
Design of an Accelerating Cavity for the Superconducting Super Collider Low-Energy Booster	1020
C.C. Friedrichs, B.M. Campbell, L. Walling
Superconducting Niobium Sputter-Coated Copper Cavity Modules for the LEP Energy Upgrade	1023
C. Benvenuti, P. Bernard, D. Bloess, G. Cavallari, E. Chiaveri, E. Haebel, N. Hilleret, J. Tückmantel, W. Weingarten
A New Main Control Room for the AGS Complex	1026
P.F. Ingrassia, O.H. Dyling, R.M. Zaharatos
Personnel Protection and Beam Containment Systems for the 3 GeV Injector	1028
R. Yotam, E. Benson, J. Cerino, K. Crook, J. Fitch, R. Garoutte, R. Hettel, M. Horton, N. Ipe, G. Nelson, J. Sebek, H. Smith
A Cooling-Water System for the Accelerator Test Facility	1031
M. Akemoto, Y. Nishinomiya, A. Suyama
Blumlein-Type X-Band Klystron Modulator for Japan Linear Collider	1034
T. Shidara, M. Akemoto, I. Ohshima, K. Takata, S. Takeda, T. Teranishi, M. Yoshida
High-Power Input Coupler with a Cylindrical Alumina Window	1037
M. Akemoto
X-Band Klystron Modulator for the Accelerator Test Facility	1040
M. Akemoto, T. Shidara, S. Takeda, J. Urakawa
Performance Test of a 65-MW Klystron Unit Relevant to the Microwave Source Upgrade of the KEK 2.5-GeV Linac	1043
T. Shidara, S. Anami, A. Asami, H. Honma, K. Nakao
Superconducting Cavity Development at Los Alamos National Laboratory	1046
B. Rusnak, E.R. Gray, R.G. Maggs, D.L. Schrage, A.H. Shapiro, G. Spalek, P. Wright
RF Pulses with Flat Output Waveform Generator in RF Power Upgrade System	1048
B.Y. Bogdanovich, A.P. Ignatyev, V.A. Senyukov
Tuning and Coupling Mismatch Tolerance in Cavities Driven by a Quadrature Hybrid	1051
A.M. Vetter