一、官网
是西欧核子研究组织(CERN)开发的全能粒子化学模拟器,可用于各类应用场合,包括核医学、高能化学、辐射防护等。
在官网上,你可以找到的最新版本和文档,以及广泛的应用示例和教程。的设计理念基于现代软件开发的最佳实践,并采用模块化结构,容许使用者依据须要选择特定模块,便于更好地适应其应用场合。
下边是一个简单的事例,展示怎样使用模拟一个简单的电子束:
#include "G4RunManager.hh" #include "G4UImanager.hh" #include "G4VisExecutive.hh" #include "DetectorConstruction.hh" #include "PhysicsList.hh" #include "PrimaryGeneratorAction.hh" int main(int argc, char** argv) { // Create the detector construction DetectorConstruction* detector = new DetectorConstruction(); // Create the physics list PhysicsList* physics = new PhysicsList(); // Create the primary generator action PrimaryGeneratorAction* primary = new PrimaryGeneratorAction(); // Create the run manager and configure it G4RunManager* runManager = new G4RunManager(); runManager->SetUserInitialization(detector); runManager->SetUserInitialization(physics); runManager->SetUserAction(primary); // Initialize the Geant4 UI manager G4UImanager* uiManager = G4UImanager::GetUIpointer(); // Initialize visualization G4VisManager* visManager = new G4VisExecutive(); visManager->Initialize(); // Run in interactive mode uiManager->ApplyCommand("/control/execute vis.mac"); // Clean up and exit delete visManager; delete runManager; delete primary; delete physics; delete detector; return 0; }
二、学习资源
不仅官网上的资源物理实验模拟器电脑版,还有其他好多学习的资源。其中,grant是一个基于网路的远程桌面服务,提供一个访问的实验环境。
另外,的官网上也有一些教程,包括入门教程和中级教程。这种教程都提供源代码和示例数据,便捷用户学习。据悉,还有一些第三方机构和个人提供的课程材料和教学视频。
以下是官网上提供的一个简单的教程事例,展示怎样使用构建一个基本的侦测器和模拟一个质子束:
#include "G4RunManager.hh" #include "G4UImanager.hh" #include "G4UIterminal.hh" #include "G4UItcsh.hh" #include "G4VisExecutive.hh" #include "G4UIExecutive.hh" #include "DetectorConstruction.hh" #include "PhysicsList.hh" #include "PrimaryGeneratorAction.hh" int main(int argc, char** argv) { // Create the run manager and configure it G4RunManager* runManager = new G4RunManager(); runManager->SetUserInitialization(new DetectorConstruction()); runManager->SetUserInitialization(new PhysicsList()); runManager->SetUserAction(new PrimaryGeneratorAction()); // Initialize the Geant4 UI manager G4UImanager* uiManager = G4UImanager::GetUIpointer(); // Initialize visualization G4VisManager* visManager = new G4VisExecutive(); visManager->Initialize(); // Initialize the UI G4UIExecutive* ui = new G4UIExecutive(argc, argv, "tcsh"); uiManager->ApplyCommand("/control/execute vis.mac"); ui->SessionStart(); // Clean up and exit delete ui; delete visManager; delete runManager; return 0; }
三、设置通用粒子源
支持多种粒子源类型,包括单个粒子源、多个粒子源、泊松分布粒子源等。可以通过设置相应的源参数,控制粒子源的属性和生成数量。
以下是一个简单的事例,展示怎样使用构建一个基本的侦测器和模拟一个通用粒子源:
#include "G4RunManager.hh" #include "G4UImanager.hh" #include "G4VisExecutive.hh" #include "DetectorConstruction.hh" #include "PhysicsList.hh" #include "PrimaryGeneratorAction.hh" #include "GeneralParticleSource.hh" int main(int argc, char** argv) { // Create the detector construction DetectorConstruction* detector = new DetectorConstruction(); // Create the physics list PhysicsList* physics = new PhysicsList(); // Create the primary generator action PrimaryGeneratorAction* primary = new PrimaryGeneratorAction(); // Create the general particle source and configure it GeneralParticleSource* gps = new GeneralParticleSource(); gps->SetParticleEnergy(1.0*GeV); gps->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.)); gps->SetParticlePosition(G4ThreeVector(0.,0.,-10.)); // Set the GPS to be the primary generator action primary->SetParticleSource(gps); // Create the run manager and configure it G4RunManager* runManager = new G4RunManager(); runManager->SetUserInitialization(detector); runManager->SetUserInitialization(physics); runManager->SetUserAction(primary); // Initialize the Geant4 UI manager G4UImanager* uiManager = G4UImanager::GetUIpointer(); // Initialize visualization G4VisManager* visManager = new G4VisExecutive(); visManager->Initialize(); // Run in interactive mode uiManager->ApplyCommand("/run/beamOn 100"); // Clean up and exit delete visManager; delete runManager; delete primary; delete physics; delete detector; return 0; }
四、论坛
峰会是一个开放的社区,任何人都可以在这儿提出问题、分享经验和知识。峰会上有好多关于的讨论和技术支持,对于菜鸟和中级用户都很有用。
以下是峰会上的一个问题,关于怎么使用模拟一个粒子在材料中的运动轨迹:
// Use the Geant4 tracking manager to initialize the track G4Track* track = new G4Track(new G4DynamicParticle(G4Proton::Proton(), G4ThreeVector(0.,0.,500.*MeV), 0.), 0., 0.); G4TrackingManager* trackingManager = G4EventManager::GetEventManager()->GetTrackingManager(); trackingManager->SetStoreTrajectory(true); trackingManager->SetTrajectory(new G4Trajectory(track)); trackingManager->ProcessOneTrack(track); // Get the trajectory from the track and store it in a file G4Trajectory* trajectory = (G4Trajectory*) track->GetUserInformation(); std::ofstream outFile("trajectory.txt"); for(int i=0; iGetPointEntries(); i++) { G4TrajectoryPoint* point = (G4TrajectoryPoint*) trajectory->GetPoint(i); outFile << point->GetPosition().x()/mm << " " << point->GetPosition().y()/mm << " " << point->GetPosition().z()/mm << std::endl; } outFile.close();
五、有时间概念吗?
支持时间模拟,可以记录粒子在模拟中经过的时间和抵达某个特定地点的时间。这对于个别应用场合十分重要,比如核医学和粒子化学学中的时间帧率。
以下是一个简单的事例,展示怎样使用模拟一个粒子在时间上的运动轨迹:
#include "G4RunManager.hh" #include "G4UImanager.hh" #include "G4VisExecutive.hh" #include "DetectorConstruction.hh" #include "PhysicsList.hh" #include "PrimaryGeneratorAction.hh" int main(int argc, char** argv) { // Create the detector construction DetectorConstruction* detector = new DetectorConstruction(); // Create the physics list PhysicsList* physics = new PhysicsList(); // Create the primary generator action PrimaryGeneratorAction* primary = new PrimaryGeneratorAction(); // Create the run manager and configure it G4RunManager* runManager = new G4RunManager(); runManager->SetUserInitialization(detector); runManager->SetUserInitialization(physics); runManager->SetUserAction(primary); // Initialize the Geant4 UI manager G4UImanager* uiManager = G4UImanager::GetUIpointer(); // Initialize visualization G4VisManager* visManager = new G4VisExecutive(); visManager->Initialize(); // Run in interactive mode with time tracking uiManager->ApplyCommand("/tracking/storeTrajectory 1"); uiManager->ApplyCommand("/run/beamOn 100"); // Clean up and exit delete visManager; delete runManager; delete primary; delete physics; delete detector; return 0; }
结束语
是一个强悍的粒子化学模拟器,且用于各类应用场合。的学习曲线较崎岖物理实验模拟器电脑版,并且在把握相关技术后,可以帮助研究人员进行复杂的数学模拟,并为相关领域的研究提供支持。