Hello everybody, when running a egs++ user code simulation with calculation=combine in the run control section of…

Hello everybody, when running a egs++ user code simulation with calculation=combine in the run control section of the .egsinp file, results appear to be correctly merged. However, it does not appear that IAEA phase space file outputs from each separate run are merged at all. Is there an option to enable that, or is it not supported at this point?

I’m having the following issues after changed the scripts. Can anyone guide me to solve this issue in DOSXYZnrc

I’m having the following issues after changed the scripts. Can anyone guide me to solve this issue in DOSXYZnrc

Select COMPILE to begin.

Executing make opt

Fortran compiling dosxyznrc_linux64.F using flags ‘ -mcmodel=large -O3 -ffast-math’ and extra objects/libs ‘/home/mcpacs/EGSnrc-master/HEN_HOUSE/lib/linux64/egs_c_utils.o /home/mcpacs/EGSnrc-master/HEN_HOUSE/lib/linux64/read_write_pardose.o /home/mcpacs/EGSnrc-master/HEN_HOUSE/lib/linux64/load_beamlib.o /home/mcpacs/EGSnrc-master/HEN_HOUSE/lib/linux64/load_vculib.o -ldl -L/home/mcpacs/EGSnrc-master/HEN_HOUSE/egs++/dso/linux64 -Wl,-rpath,/home/mcpacs/EGSnrc-master/HEN_HOUSE/egs++/dso/linux64 -liaea_phsp ‘

/usr/bin/ld: failed to convert GOTPCREL relocation; relink with –no-relax

collect2: error: ld returned 1 exit status

/home/mcpacs/EGSnrc-master/HEN_HOUSE/makefiles/standard_makefile:72: recipe for target ‘/home/mcpacs/EGSnrc-master/EGS_HOME/bin/linux64/dosxyznrc’ failed

/home/mcpacs/EGSnrc-master/HEN_HOUSE/makefiles/standard_makefile:137: recipe for target ‘opt’ failed

Hi all

Hi all,

I’m going to get a PDD& profile curve in a water phantom, but I don’t know how to get the phase space file at the end of applicator in IOERT system. I can not use the IAEA phase space file. because my system is IOERT AND IAEA doesn’t have any document for it. I provided a part of the simulation file on github(Issues #502)

thanks in advance.

Hello everyone

Hello everyone,

I have read in the getting started manual that we should avoid abutting surfaces when modeling the geometry. In my simulations in egs_chamber I have a disk lying exactly on a square (see please the attacched screenshot). I used the egs_envelope to inscribe the disk in the square. I do not see other ways to model my geometry avoiding abutting surfaces. Woud this negatively affect my results? Thank you very much in advance!

Hi guys

Hi guys,

I have an issue with the jaws. I only get this field size (attached) whatever the jaws settings are. I am pretty sure that my scoring plane is placed underneath the jaws. I want to get the field size of 10*10

I approciate your help,Thanks

Hanan

Hello everyone

Hello everyone,

I was looking on the cavity manual online https://nrc-cnrc.github.io/EGSnrc/doc/pirs898/cavity.html to understand how the charged particles fluence is scored.

I don´t understand why only the restricted stopping power is used to calculate the integrals over the initial and the final energy of the electrons, which gives their range. In this way am I not missing all the “catastrophic” energy losses and thus overestimating the fluence? The track-lengths could not be simply calculated as the sum of all the CH steps in the volume of interest?

Thank you very much in advance for your help!

https://nrc-cnrc.github.io/EGSnrc/doc/pirs898/cavity.html//cdn.embedly.com/widgets/platform.js

Hello everyone

Hello everyone,

According to the articles I read, my system source has the following specifications:

ISOURC=19, FWHM=1mm, mean angular spread=0 and my source library is parallel(pencil beam). Is it possible to select the source shape according to these data? In addition to the selected library for the type of source, is there a need for library selection for the source shape?

:start source definition:

:start source:

library = egs_parallel_beam

name = the_parallel_source

:start source shape:

type = ???

position = 0, 0, 0

:stop source shape:

:start target shape:

library = egs_circle

radius = 2.2

:stop target shape:

:start spectrum:

type = tabulated spectrum

spectrum file = /home/…/EGSnrc/HEN_HOUSE/spectra/egsnrc/12mevliac.spectrum

:stop spectrum:

charge = -1

:stop source:

simulation source = the_parallel_source

:stop source definition: