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LA-9256-PR Progress Report UC-28 LA—9256-PR Issued: March 1M2 DE82 013753 Progress at LAMPF July—December 1981 Clinton P. Anderson Meson Physics Facility Editor John C. Allred Scientific Editorial Board Olin B. van Dyck Richard L. Hutson M. Stanley Livingston Mario E. Schillaci Production Staff Kit Ruminer Beverly H. Talley so'eij t>y an agency o' the United Slates Govetnin Nether th.. tJf-HW S-dt« Govf.tr •nrv ihetijol. nor .iny a( The,r employees, 'mln, warrjnl/. cuproK <j- implioi], ni k-gjl liability Of responsibility for irifc iitturacy. cumuli.innnit, 01 utnlulnr.'ss o- "*, uaiwutus. product, ar proctm niscloy.tj. or lily owned rights. Reference herein to any specific eomitvciai u'liduct. o-owtt. ii- y name, trademark, mjiufncturei. or oihcr«i*\ does J not nereswrrv- constitute or .nc it'll. tciOTimciidalinn, or favoring By tha U.nfed f necessir-iiy state w ipdeci those of i r*ii'<i Sta es Govofnmeni 01 V agency thereof. ABSTRACT Progress at LAMPF is the semiannual progress report of the MP Division of the Los Alamos National Laboratory. The report includes brief reports on research done at LAMPF by researchers from other institutions and Los Alamos divisions. Los Alamos National Laboratory Mmm Los Alamos, New Mexico 87545 WSTJBBI/r/ow lyj^mm,* Time to Think about the Future: LAMPF continues to increase its capabilities and productivity. Experimenters are asking ever more sharply defined questions and experiments are becoming increasingly illuminating. The rate of accomplishment is high, but strongly limited by budgets for research and operations. This state of affairs is expected to continue through the rest of this decade. However, now is the time to start giving serious thought to the direction of nuclear physics generally, and LAMPF activities in particular — during the 1990s. The vast world-wide effort on weak interactions is almost guaranteed to open new doors for pur­ suing the study of nuclear as well as subnuclear physics. Quark physics appears to be here to stay. Low-energy pion probes are proving extremely powerful, and high-energy ones hold similar promise, as do kaons and antiprotons, for opening new windows on the atomic nucleus. So what shall we do to assure the nation a high level of accomplish­ ment in nuclear physics next decade and perhaps the one beyond that? A serious effort has commenced to explore the options available to us if we use LAMPF as an injector for a higher energy accelerator. Studies are being pursued, workshops are being held, and attempts are under way to elicit the wishes and enthusiasms of the scientific community, upon whom our nation depends for producing the knowledge and people for coping with all matters nuclear. Your input is urgently re­ quired. Without it, nothing will happen. Louis Rosen Director, LAMPF iv mOCMEM AT LAMPF July-December 1981 Los Alamos National Laboratory CONTENTS EXPERIMENTAL AREAS viii LAMPF ORGANIZATION CHART x I. LAMPF NEWS 1 II. MEETINGS 5 III. RESEARCH 12 Nuclear and Particle Physics 12 Measurement of Parity Violation in the p-Nucleon Total Cross Sections at 800 MeV (Exp. 634) 12 Measurement of the Relative Sign of Neutron and Proton Transition Matrix Elements in (p,p) Reactions (Exp. 627) 14 A Test of the Interacting Boson Approximation (Bates Linac Exp. 782) 14 Electron Scattering from the Oxygen Isotopes (Bates Linac Exp. 756) 15 Structure of States in the Oxygen Isotopes via Measurements of the Spin-Depolarization and Spin-Rotation Observables (Exp. 643) 15 Measurement of the Triple-Scattering Parameters D, R, A, R', and A' for Proton-Proton and Proton-Neutron Scattering at 500 and 800 MeV (Exp. 392) 15 Measurement of Spin-Flip Probabilities in Proton Inelastic Scattering at 800 MeV and Search for Collective Spin-Flip Modes (Preliminary Survey) (Exp. 411) 18 ~p + Nucleus Elastic Scattering at 500 MeV (Exps. 425/433) 19 The nC{p,p'),2C Reaction at 400, 600, and 700 MeV (Exps. 432/531) 22 Excitation of the Giant Resonance Continuum with Intermediate-Energy Protons (Exp. 473) 23 Proton Scattering from 20Ne at 0.8 GeV (Exp. 475) 25 Polarized Proton Scattering from 24,26Mg at 0.8 GeV (Exp. 476) 28 Precision Studies of p + p —*• d + n+ as Probe of Dibaryon Resonances (Exp. 508) 30 p-p Elastic Scattering at 800 MeV (Exp. 563) 32 Search for Giant Monopole and Giant Magnetic Dipole Excitations at 0° (Exp. 630) 34 Reactive Content of the Optical Potential at 800 MeV (Phase II) (Exp. 642) 35 Asymmetry Measurement of the (P.TI1) Reactions on 'Be at 650 MeV (Exp. 649) 37 j^-Nuclear Elastic Scattering at Energies Between 30 and 80 MeV (Exp. 561) 38 A Search for Nuclear Critical Opalescence Using the Reaction 40Ca(jt+,2Y) (Exp. 541) 38 July-December1981 MWOIWM AT LAMPF V Los Alamos Nitiorml Libortlory Elastic Scattering of Pions in the Energy Range 20-50 MeV (Exps. 29/54) 40 Study of Isovector Giant Resonances with Pion Charge Exchange (Exps. 412, 525, and 607) 41 High-Resolution Study of (Jt\/>p). (n\pd), and Other (Tt\.v.v) Reactions on MLi, 14N. and 160 (Exp. 315) 48 A Study of Neutrino-Electron Elastic Scattering (Exp. 225) 49 A Measurement of the Rare-Decay n° —» eV (Exp. 222) 50 High-Precision Study of the uH Decay Spectrum (Exp. 455) 53 A Measurement of Inclusive Pion Double Charge Exchange on "'O and 40Ca (Exp. 309) 55 Preliminary Report on a New Pion-Beta Decay Experiment (Exp. 32) 58 Crystal Box Experiment (Exps. 400/445) 59 Muonic X-Ray Study of "'Am and M5Am (Exp. 653) 61 Inelastic Pion Scattering by 170, '"O, and "F (Exp. 369) 62 Elastic Scattering of Pions from l2,,4C at 164 MeV in 1° Bins (Exps. 539/622) 63 N — Z Dependence of Analog Double-Charge-Exchange Reactions (Exp. 606) 64 Investigation of the Strong Cancellations of Neutron/Proton Transition Amplitudes in 14C (Exp. 622) 65 Nonanalog Double Charge Exchange (Exp. 577) 66 The Study of Broad-Range Pion Inelastic-Scattering Spectra (with Emphasis on the Excitation of the Giant Monopole Resonance) (Exp. 597) 67 Nuclear Chemistry 68 A Product Recoil Study of the "Cfn* ,nN)"C Reactions over the Energy Range 90 to 350 MeV (Exp. 543) 68 Helium-Jet Transport of Fission and Spallation Reaction Products (Exp. 629) 69 Materials Science 71 Irradiation of Technologically Important Metals with 800-MeV Protons Using the Isotope Production Facility at LAMPF (Exp. 554) 71 Muon-Spin-Rotation (uSR) Studies in Spin-Glass Systems (Exp. 499) 72 Models for u+ Depolarization in Spin Glasses 73 Fusion Materials Neutron Irradiations (Exp. 545) 73 The Effect of Dislocation Vibration on Void Growth in Metals (Exp. 407) 74 Muon-Spin-Rotation (uSR) Measurements in Selected Ternary Metallic Compounds (Exp. 640) 75 Biomedical Research 78 Pion Therapy Beam Development and Characterization (Exps. 270 and 271) 78 Treatment-Planning Code Development 79 Biomedical Instrumentation 79 Calculational Support 80 MP-Division Publications 83 Vi PUMREM AT LAMPF July-December 1981 Los Alamos National Laboratory FACILITY AND EXPERIMENTAL DEVELOPMENT 91 ACCELERATOR OPERATIONS 100 MILESTONES 102 APPENDIX A EXPERIMENTS RUN 104 APPENDIX B NEW PROPOSALS 109 APPENDIX C ACTIVE AND COMPLETE EXPERIMENTS BY CHANNEL 112 APPENDIX D ACTIVE SPOKESMEN, INSTITUTIONS. AND EXPERIMENTS 143 APPENDIX E VISITORS TO LAMPF 146 INFORMATION FOR CONTRIBUTORS 151 ERRATUM 152 PROGRESS AT LAMPF Vtf Los Alamos National Laboratory Experimental Areas Primary beam lines in experimental areas: Line A — Main Beam Line for Pion and Muon Channels Line B — Neutron and Proton Beams and Nuclear Chemistry Facility Line C —High-Resolution Proton Spectrometer Line D — Weapons Neutron Research Facility Experimental beam lines: Area A: BSA - Beam Stop A EPICS — Energetic Pion Channel and Spectrometers LEP — Low-Energy Pion Channel P3 — High-Energy Pion Channel SMC — Stopped Muon Channel TTA - Thin Target Area Area B (AB or Nucleon Physics Facility): BR - Neutrons and Protons EPB — External Proton Beam LB-NC — Line B — Nuclear Chemistry Area C: CCH — Area C Control and Counting House HRS — High-Resolution Proton Spectrometer Area A-East: Biomedical Pion Channel TA-5 - Target A-5 ISORAD — Isotope Production and Radiation Effects Facility Neutrino Area ViH MWQRESS AT LAMPF July-December 7981 Los Alamos National Laboratory BEAM AREA X> L1 20 40 60 C I • 1 U 1 1 1 *\4 V DS GCOPMl- yAU in FEE' ,' 'rf^ ff.NUCLNUCLEO N PHYSICS FACILITY BEAM STOP EPICS PION SPECTROMETER TARGET (>,• ^-v? /. /• ^*-a ,« ""«• HIGH ENERGY PION "» /. • / •• CHANNEL FUTURE STAGING AREA -\\ ..•> * .••'" ' lp,l / HIGH RESOLUTION #^ • Z "' 1 !. SPECTROMETER / V.'" ; V TARGET FUTURE ,A^ A-5 - •'• x ISOTOPE REMOTE KANDLNG.•<#=> 1 PROtXJCTION FACILITY ~j — 4,.J_ a BEAM ?• J, KAD1ATION , „ EFFECTS SWITCHYARD -,. ... ! • .-. ^TARGET VTARGET ;-•** 2 m •Ss . ._ ..''-' , C *"' • V »" ^BEAM STOP N 1 A-6 THIN r "'' - 3* Kali 1 <';^*^«fc^-iF w ft NEUTRINO AREA SUA ! - STOPPED MUON FUTURE STORAGE LOW ENERGY CHANNEL RING AREA PION LINE (LEP) v RADIOBIOLOGY AND THERAPY RESEARCH FACILITY BEAM AREA V »»;« 'X CLINTON P. ANDERSON MESON PHYSJCS rACILITY (LAMPF) WEAPONS NEUTRON > RESEARCH FACILITY TARGET * 1 lL©§MMm® turn IT iwn 1—nimi July-December 1981 PROGRESS AT LAMPF IX Los Alamos National Laboratory LAMPF Dircctor Assoc. Division Leader MP-Division Leader Chit* ol Operation! Louis Rosen Assoc. Division Leader D. C. Hagerman Deputy MP-Division Leader Experimental Areas D. E. Nagle L. E. Agnew Accelerator Development LAMPF Scheduling Experimental Area* Committee Committee Development Committee D. C. Hagerman, Chairman D. C. Hagerman, Chairman L. E. Agnew, Chairman Group IIP-1 , Group MP-2 Aeat. Division Leader Asst. Division Leader Group MP-7 Group MP-1 Electronic Inetrumenta- , Accelerator Operation* Facility Planning • LAMPF Safety Experimental Areas Electronic Instrumenta­ lion * Computer Syatema ' Budget Control tion I Computer Systems E.
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  • Development of a Robotically-Based Automated Biodosimetry Tool for High-Throughput Radiological Triage

    Development of a Robotically-Based Automated Biodosimetry Tool for High-Throughput Radiological Triage

    Int. J. Biomechatronics and Biomedical Robotics, Vol. 1, No. 2, 2010 115 Development of a robotically-based automated biodosimetry tool for high-throughput radiological triage Youhua Chen*, Jian Zhang, Hongliang Wang, Nabil Simaan and Y. Lawrence Yao Columbia University, 220 S.W. Mudd Building, 500 West 120th Street, New York, NY 10027 USA E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] *Corresponding author Guy Garty, Yanping Xu, Oleksandra V. Lyulko, Helen C. Turner, Gerhard Randers-Pehrson and D.J. Brenner Columbia University, 136 S. Broadway, Irvington, NY 10533 USA E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] E-mail: [email protected] Abstract: To provide the best opportunities for life-saving interventions in the event of a radiological or nuclear threat, there is an urgent need to improve the speed and efficiency of biodosimetric assays for triage and therapy. A rapid automated biodosimetric system used to assess thousands of individual radiation exposure doses is helpful to curb mass panic, and to conserve limited medical resources. This paper presents the development of a new robotically-based automated biodosimetry tool (RABiT). The RABiT is capable of automating two mature biodosimetry assays: the micronucleus and γ-H2AX assay. The design considerations guiding the hardware and software architecture are presented with focus on ease of implementation, methods of communication and need for real-time control versus soft time control cycles.