MCNP程序核临界计算入门（包含很多实例，适合初学者）

【实例简介】
MCNP核临界安全教程，内容很齐全，适合初学者。通过文档的学习能够尽快入门。
LA-12827M Manual UC-714 Issued: August 1994 Criticality Calculations with MCNP A Primer Charles d. harmon, ii Robert D. Busch Judith F Briesmeister R. Arthur forster Contractors with Los Alamos National Laboratory, Nuclear Criticality Safety Group The university of New Mexico, Albuquerque, NM 87131-1341 8 Los Alamos NAT丨 ONAL LABOR AT0RY Los Alamos, New Mexico 87545 Criticality Calculations with MCNPTMm A Primer by Charles d. harmon ii Robert D. Busch" Judith F briesmeister R.A. Forster ABSTRACT The purpose of this Primer is to assist the nuclear criticality safety analyst to perform computer calculations using the Monte Carlo code MCNP. Because of the closure of many experimental facilities, reliance on computer simulation is increasing. Often the analyst has little experience with specific codes available at his/her facility. This Primer helps the analyst understand and use the mcnp monte Carlo code for nuclear criticality analyses It assumes no knowledge of or particular experience with Monte Carlo codes in general or with MCNP in particular. The document begins with a Quickstart chapter that introduces the basic concepts of using MCNP. The following chapters expand on those ideas, presenting a range of problems from simple cylinders to 3-dimensional lattices for calculating keff confidence intervals. Input files and results for all problems are included. The Primer can be used alone, but its best use is in conjunction with the MCNP4A manual. After completing the Primer, a criticality analyst should be capable of performing and understanding a majority of the calculations that will arise in the field of nuclear criticality safety Contractor Los Alamos National Laboratory Nuclear Criticality Safety Group The University of New Mexico, Albuquerque, NM 87131-1341 Table of contents al List of Figures i1 List of Graybars ii.1 INTRODUCTION iiL.1 Chapter 1: MCNP Quickstart 1.1 1.1 WHAT YOU WILL BE ABLE TO DO..... a●●。●鲁●●鲁●●●●b●●●b●●●e看●。B自司命命自看 1.1 1.2 MCNP INPUT FILE FORMAT....... 1.1 1.2.A Title Card 看垂 ●·●p4·●。自自画血自品▲自身自自自合自省● 12 1.2. B General Card Format..... 112 1,2 C Cell cards.1....1.1.1.3 1.2. D Surface Cards..............-. 14 1.2.E Data Cards 1.3 EXAMPLE PROBLEM 13. A Problem Description......……17 1.3.B Title Card. 13. C Cell Cards 1.8 1. D Surface Cards 1.10 1.3.E Data Cards …1.11 1.4 RUNNNG MCNP 113 1.4.A Output 1.14 1.5 SUMMARY …1.15 Chapter 2: Reflected systems 2.1 2.1 WHAT YOU WILL BE ABLE TO DO.. 21 22 PROBLEM DESCRIPTION a····◆“··4-···4 2.1 2. 3 CONFIGURATION 1 22 2.3. A Geometry 血。画△▲曲曲曲看4 e;●看●·。看●b●4·奇● 自·着 2.2 23 B Materials… 27 23 C MCNP Criticality Controls……… 23 D Configuration 1 MCNP Input File………….8 2.3.E Output 29 2. 4 cOnFIGURATION 2 ··●◆●甲。看鲁鲁···●●●●鲁看命●·●鲁即·。鲁●春●·自。●●·●●争 29 24. A Geometry… 2.10 24 B Materials…212 2. 4.C MCNP Criticality 2.4. Configuration 2 MCNP Input File ●自·鲁●●4●●p●命●●●命●函否日●●。日着 2.13 24. OUtput.…12.13 2.5 CONFIGURaTION 3 214 2.5.A Geometry 214 25 B Materials 2,16 2.5.C MCNP Criticality Controls..... 216 2.5.D Configuration 3 MCNP Input File 217 25 OUtput… p垂·●●b●●鲁非鲁●●● …22.17 2.6 SUMMARY 2.18 Chapter3:S(阝) Thermal neutron treatment for moderators……31 3.1 WHAT YOU WILL BE ABLE TO DO 31 3.2 S(a, B THERMAL NEUTRON TREATMENT 3.1 3.3 PROBLEM DESCRIPTION 看看看·垂。日昏命看D。·。·吾·看看群鲁◆鲁自●●命●鲁自·唱●●命● 3.1 3. 4 EXAMPLE 3 SETUP 3.2 3.4.A Geometry 3.2 34. B Materials… 3.6 3.4.C MCNP Criticality Controls ...............................................3.7 3.4.D Example 3 MCNP Input File 3.8 34 E Output…......…39 3.5 MCNP Keff OUTPUT.….........3.10 3.6 SUMMARY 3.14 Chapter 4: Simple Repeated Structures 垂看4· 4.1 4.1 WHAT YOU WILL BE ABLE TO DO …4.1 4.2 PROBLEM DESCRIPON 。·命●·●p●●·●·●D。·。·●●●·鲁·带●●·身要●命看鲁。●看 4,1 4 3 EXAMPLE 4 SETUP 4.2 43.A Geomet 4.2 4. 3.B Materials ●●中●D●鲁●●●●垂司。●·,要●●萝命非。●··看自看看e龟●鲁●鲁驴●·画·●单。香自昏 4.9 4. 3. C MCNP Criticality Controls 49 43 D Example4 MCNP Input File..…,…,4.10 43 E Output… ●●●●D·◆·看春●d●●●b·看争春着·鲁 4.11 44 PLOTTING THE PROBLEM GEOMETRY 4.11 4 5 SUMMARY 4.15 Chapter 5: Hexahedral (Square) Lattices 5.1 5.1WHAT YOU WILL BE ABLE TO DO.... 5.1 5.2 PROBLEM DESCRIPTION 自。●.。aa物●●垂e●··●●学◆非自鲁●●鲁●●鲁 5.3 EXAMPLE 5 SETUP FOR CASE I 52 5.3.A Geometry 52 53. B Materials… 58 5.3. C MCNP Criticality Controls 59 53 D Example5 Case I MCNP Input File…… 5.9 5.3.E Output ●鲁。●●●鲁鲁鲁唱。●命 5.10 5.4 CASE I: CHANGING MATERIALS IN SELECTED ELEMENTS.... 5.12 55CASE亚: A LATTICE WITH ONE EMPTY ELEMENT…,,, ,5.14 5.6 CASE IV: CHANGING SIZE OF CELLS FILLING A LATTICE.... 5.15 5.7 SUMMARY.... ●●。看带寺●●鲁自看@ 11516 Chapter 6: Hexagonal(Triangular)Lattices b●●·b●●●●自4●益。售。·非·●·自自 6.1 WHAT YOU WILL BE ABLE TO DO 6.1 6.2 PROBLEM DESCRIPTION ●.●●命命·自省4·命pa哥··●鲁··●●●●●●D●●●● 61 6.3 EXAMPLE 6 CASE I SETUP 62 6.3.A Geometry 62 6.3 B Materials 血也。非。● ●。·函●·鲁D● 613 6.3.C MCNP Criticality Controls 614 6. 3. D Example 6 Case I MCNP Input File ●曲●◆●●●●鲁·电自物办●4 6.14 6.4 PLOT OF GEOMETRY 6.16 6.5 CASE II: EXPANDED FILL CARD IN TRIANGULAR LATTICE... 6.17 6.6 NONEQUILATERAL TRIANGULAR LATTICE 6.19 6.7 SUMMARY 下。·●·看●·中●·音●●司带自自 620 Chapter 7: 3-Dimensional Square Lattices 7,1 7.1 WHAT YOU WILL BE ABLE TO DO 71 7.2 PROBLEM DESCRIPTION . 7. 3 EXAMPLE 7 CASE I SETUP 7.2 7. 3. A Solution Cylinder ·..号·鲁●鲁·日··带。看带要●·日。香●.鲁●D看··· 72 73 B Square Lattice Cell… 7.3 73 C Lattice Window 75 7.3. DRest of the World. 74 MATERIALS 75 7.5 MCNP CRITICALITY CONTROLS 7.6 7.6 EXAMPLE Z INPUT FLE 7.7 OUTPUT 77 7. 8 PLOT OF GEOMETRY 7.8 7.9 CASE I: CHANGING MATERIALS IN SELECTED ELEMENTS,.. 7.8 7.10 UNIVERSEO LATTICES ●鲁e。●●●。 710 7.11 SUMMARY .7.15 PRMER SUMMARY .8.1 APPENDICES A- Monte Carlo Techniques ●鲁●●●● A-1 B- Calculating Atom Densities ●●b●·命看·●香鲁●●p。●●香。d·●·●告。●■·●。鲁。鲁。自自。自。。。●香●··●·●D B-1 C- Specifications Atom Densities of Selected Materials D- Listing of Available Default Cross Sections D-1 E-Geometry Plot and Tally MCPLOT Commands F-MCNP Surface Cards F-1 List Of Figures Chapter 1 Figure1-1 MCNP input file structure…… Figure1-2 Cell card example……………………………… 14 Figure1-3 Surface card example……………… 14 Figure14. Example of code card………………………… 15 figure1-5. Example of ksrc card....……… Figure 1-6. Data card with material format in atom fractions ta●·b●命看●●自。看··● 17 Figure 1-7. Bare plutonium sphere geometry Chapter 2 Figure 2-1. Configuration 1 geometry ●●●a●●●····●··4··.···●D看●●命·●s.是······ 2.2 Figure22 Configuration1 surface combinations……… Figure23. Configuration1 surface cards………………… 24 Figure2- Configuration 1 cell cards…………………………… 24 Figure 2-5 Configuration 1 material specification 27 Figure 2-6 Configuration 1 criticality control cards 2.8 Fig igure 2-7 Configuration 2 geometry ..210 Figure 2-8 Configuration 2 surface cards ●=▲●4“▲▲▲a备命鲁●毋烟看号自·鲁自看·· 2.11 Figure 2-9. Configuration 2 cell cards 2.11 Figure210. Configuration2 material cards…… 2.12 igure 2-11 Configuration 2 criticality control cards ·d自鲁命@ 2.12 Figure2-12. Configuration3 geometry……… 214 Figure213 Configuration3 surface cards…………215 Figure214 Configuration3 cell cards…………………… 216 Figure215. Configuration3 material cards……………216 Figure2-16. Configuration3 criticality control card………………………216 Chapter 3 Figure 3-1. Example 3 geometry 32 Figure 3-2. Example 3 surface cards 3.3 Figure33. Example3 cells and surfaces…… 33 Figure 34. Example 3 cell cards 35 Figure 3-5. Example 3 material cards 3.6 Figure 3-6. Example 3 control cards 各·。·●···合·看·。自·● 3.7 Chapter 4 Figure 4-1. Example 4 geometry 4.2 Figure42. Solution cylinder surfaces.…… 4.3 Figure 4-3. Example 4 surface cards ●●●●卷看毋。自 143 Figure44. Example4 cell cards…………… 48 Figure 4-5. Example 4 cell diagram 。。●●●·看看。●·命● ●····自。●办·· ●。。●鲁●鲁 48 xample4 material cards…………………………… 4.9 Figure 4-7. Example 4 control cards ....- ●●。 49 Chapter 5 Figure 5-1. Example 5 geometry 52 Figure 5-2. Example 5 solution cylinder surface cards 53 Figure 5-3. Solution container with cell numbers circled and surface numbers ......5.4 Figure 54. Example 5 lattice cell surface cards ●号导●。·鲁自鲁 55 Figure55. How lattice indices are determined……… 5.6 Figure56. Example5 window surface cards…… 57 Figure 5-7. Example 5 material cards 58 Figure58. Example5 control cards..…………………159 Figure59. Lattice indices and universes for CaseⅡ…………5.13 Figure5-10. Plot of3x2 array with empty element……… 5.15 Chapter 6 igure 6-1. Case I geometry........... 6.2 gure 6-2. Case I solution cylinder surface cards .6.3 Figure 6-3. Universe l geometry 64 Figure 64 Diagram of [0, 0, O] element 65 Figure65. Sign of x and p by quadrant…… 告看 69 Figure 6-6. Example 6 lattice cell surface cards ··↓····命 …6.10 Figure6-7. Example6 window surface cards…………612 Figure 6-8. Example 6 water reflector surfaces ●●●●.●鲁·。·.鲁鲁鲁●··看··非自·卡。曾·合···q 6.13 Figure69. Case i material cards…… ●●鲁●●要·音鲁· 613 12 【实例截图】
【核心代码】