[Run issue]: Custom geometry component not recognised

[TheRealDoomSlayer]

Contact Details

No response

What was the issue?

Hi all,

Hope you are well!

I am currently trying to create a custom geometry but I am having issues. I am editing the existing parameter file called TsRandomCylindersInComponent.cc in TOPAS-nBio, that generates random cylinders within an envelope that can be a sphere, box or cylinder. I am editing the code to include an ellipse as an envelope shape. A snippet of this code and the change I have made is below.

"""
TsRandomCylindersInComponentTest::~TsRandomCylindersInComponentTest()
{;}

G4VPhysicalVolume* TsRandomCylindersInComponentTest::Construct()
{
BeginConstruction();

G4double extensionX, extensionY, extensionZ;
if ( G4StrUtil::contains(fEnvelopeType,"tssphere" ) ) {
	fEnvelope = new G4Orb(fName, fRMax);
	extensionX = 2.0 * fRMax;
	extensionY = extensionX;
	extensionZ = extensionY;
} else if ( G4StrUtil::contains(fEnvelopeType,"tscylinder")) {
	fEnvelope = new G4Tubs(fName, 0.0, fRMax, fHL, 0.0, 360.0*deg);
	extensionX = 2.0 * fRMax;
	extensionY = extensionX;
	extensionZ = 2.0 * fHL;
} else if ( G4StrUtil::contains(fEnvelopeType,"g4ellipsoid")) {
	fEnvelope = new G4Ellipsoid(fName, fxSA, fySA, fzSA);
	extensionX = 2.0 * fxSA;
	extensionY = 2.0 * fySA;
	extensionZ = 2.0 * fzSA;	
} else {
	fEnvelope = new G4Box(fName, fHLX, fHLY, fHLZ);
	extensionX = 2.0 * fHLX;
	extensionY = 2.0 * fHLY;
	extensionZ = 2.0 * fHLZ;
}

"""

Once I have made these changes to the .cc file, I then make the component using cmake by running the following commands
"""
cmake .
make -j$(nproc)
"""

I can see after running this in the command terminal that the object file for my custom geometry is successfully made in the OpenTOPAS-build folder. However, when I try to use the custom geometry component that I have made, it is giving me an error saying it is unsupported.

Does anyone have experience making custom geometry in TOPAS-nBio and have an idea as to the issue? Thank you for the help!

Kind regards,
Michaela

TOPAS-nBio category

Geometry

Version

3.0

What Operative System (OS) are you running on?

Linux (Debian/Ubuntu)

Relevant log output

Welcome to TOPAS, Tool for Particle Simulation (Version 4.0)
Loading parameters starting from: /home/Applications/TOPAS-nBio/examples/geometry/cells/generateRandomCylindersTest.txt

Geant4 Data directory has been specified by the
TOPAS_G4_DATA_DIR environment variable as /home/Applications/GEANT4/G4DATA

Geant4 version Name: geant4-11-01-patch-03 [MT] (10-November-2023)
<< in Multi-threaded mode >>
Copyright : Geant4 Collaboration
References : NIM A 506 (2003), 250-303
: IEEE-TNS 53 (2006), 270-278
: NIM A 835 (2016), 186-225
WWW : http://geant4.org/

TOPAS is in MT mode, setting number of threads to: 1

TOPAS set the tolerances based on the World size to:
Surface tolerance = 9e-09 nm, and radial tolerance = 9e-09 nm.
Topas is exiting due to a serious error.
The parameter:Ge/CylindricalEnvelope/Type
refers to an unsupported Component Type: TsRandomCylindersInComponentTest

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