|Message: Re: Transmission of Optical Photons||Not Logged In (login)|
Click on the Forum title, e.g. on the "Forums by Category" page, to read a sequence of postings to the Forum and its threads all in one page. If you are only interested in one thread or the thread following a specific posting, click the thread or the posting, which takes you to a smaller page, which contains only the part you are interested in and may be easier to navigate.
Messages are "chained" if there are only replies at the first level, i.e. 1/1.html, 1/1/1.html etc. In case of "chained" messages the message number is replaced by the icon and there is no indentation.
Inline: Display the subject line only or also the text of the posting(s); for the choice "All" the "Outline" choices are switched off.
|1||0||1||no text / full text of posting|
|2||1||All||text for level 1 only / text for All postings|
Outline: Choose the depth of the posting thread, successive toggle controls provide increasing detail.
|1||2||1||2 levels / 1 level (original posting)|
|2||3||2||3 levels / 2 levels|
|3||3||All||3 levels / all levels (all postings)|
> Step Too Small 208
> Of these,
> PreVolume expHall, PostVolume Detector: 122
> PreVolume Wrap, PostVolume Tracker; 85
> Also note that when StepTooSmall occured I called the GetStepLength()
> function to see what the step size was and on each of these occurances
> it came up to be 0 cm. I'm not sure the significance of this.
A zero step lentgh step is a 'relocation step' upon reflection; e.g. the following navigation step after G4OpBoundaryProcess has decided on a reflection will be such a relocation step.
> No Refractive Index 265
This happens when medium 1 and/or medium 2 has no MaterialPropertiesTable, or that table has no Index of Refraction; you have a 'backpainted' surface with no index for the gap.
Apparently, the volumes involved are: expHall, Detector, Wrap, tracker, WrapCap and ALRing. I suspect that some of these volumes should be 'metals' (or paints) but you have not defined their surface as dielectric_metal.
You should find out when this happened:
Same Material 1
Do you have two volumes touch each other with the same material?
|Inline Depth:||Outline Depth:||Add message:|