Dear experts,
I put my target between two lead collimators. I designed a detector inside the right side of the lead collimator. However, I have some blue viewport errors that I couldn’t overcome.
Any suggestions would be valuable.
Regards
cyclin.txt (1.4 KB)
Dear @mgulmen,
I would suggest you to click on the “Blue” and “Magenta” lines to get the detailed list of all geometry errors and then look at the details of each errors. Very likely you have defined overlapping regions.
I would also suggest you to share your whole input rather than a txt file containing just a snippet of it.
Hello,
CollRight, detAl, detMgO and detSiO2 are the ZCC co-axial, nested infine cylinders and I used infinite XYP planes to define their regions, I still got errors.
Although I used infinite cyclinder body and cut two infinite cyclinder with infinite plane (p8 plane between detSiO2 (ZCC) and det Al (ZCC)), I got touching error.
(detSiO2 and detAl needs to be same diameter)
silindirik2.inp (3.4 KB)
Regards,
gulmen
Dear @mgulmen,
You still have several geometry errors.
As an example, look at the above picture, in the “detAl” you have (among the others) errors #3, #10, and #15. If you click over that portion of space you can see that it belongs to two regions: “detAl” and “det MgO” (they are both highlighted in left panel:
If you select zone #2 of “detAl”, you can see that it is properly defined:
But then, if you look at zone #2 of “detMgO”, you can see that it is clearly poorly defined: it is defined as the portion of space between two z-planes, therefore unbound in x and y.
I strongly advise you to study the slides from the slide of the Geometry lecture from the last Beginners’ Course, in order to understand the basic concepts for geometry construction in Fluka.
Dear @amario
Thank you for your remarks. I corrected the viewport errors according to your comments hovewer I still got touching error even though there is infinite plane (p8) between two ZCC infinite cyclinders (detAl and detSiO2).
Regards
gulmen
cyc2.inp (3.5 KB)
Dear @mgulmen,
You don’t have an error but a warning.
The warning reads: “Body ‘Al’ [ZCC] and ‘SiO2’ [ZCC] are the same”.
The message seems pretty clear to me.
Indeed, the two bodies are identical. They both are ZCC with axis in x=0cm and y=0cm, and with radius=4.045cm. You could correctly define your geometry using only one of them.
Dear @amario
I understand the message but I need to use both zcc Al and SiO2. SiO2 is a cylinder at the end of the Al body. Therefore they have the same diameter.
As I make the SiO2 diameter as the same as MgO, then I get the same warning. I read somewhere in fluka lectures about touching bodies could lead to inaccuracy in results
Regards
Dear @mgulmen,
To define the geometry in the picture you need only 3 cylinders, one per each of the diameters: 7.62, 7.99, 8.09 cm.
The same body can be used to define more than one region.
Once again, I strongly invite you to study the the slide of the Geometry lecture from the last Beginners’ Course.
I’ve solved it, thank you
