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Table B.1.
Overview of the MCRT methods used in this paper.
| Method | Description | Reference |
|---|---|---|
| Split | Whenever a photon package interacts it is split into two photon packages, one of which is absorbed and the other one scatters. The latter one carries a weight that is reduced according to the scattering probability. | Section 2.1 |
| Stretch | The path length determination of a photon package is modified in favor of longer interaction-free path segments. The traversed path length is chosen according to the PDF for composite-biasing. In order to compensate for this modification the weight of the photon package needs to be readjusted. | Section 2.1 |
| Basic peel-off | At every point of interaction an additional peel-off photon package is generated that travels interaction-free toward the detector. Its weight is chosen according to the scattering probability in that particular direction. The hereafter detected luminosity is additionally reduced due to the optical depth encountered on the way to the detector. | Section 3.1 |
| Extended peel-off | A homogeneous sphere is defined with the point of interaction of the photon package as its center. The interacting photon package is immediately emitted from the surface of that sphere and its weight is reduced according to the corresponding emission spectrum of that sphere. Additionally, multiple peel-off photon packages are launched interaction-free from different locations on the surface of the sphere to the detector. | Section 3.2 |
| S&S | A combination of the Split method and the Stretch method is applied. | Section 2.1 |
| SPS | A combination of the Split method, the basic peel-off method, and the Stretch method is applied. | Section 3.2 |
| SePS | A combination of the Split method, the basic peel-off method, the extended peel-off method, and the Stretch method is applied. In particular, the Split method and the Stretch method are used during every interaction of a photon package, while the extended peel-off method is only used during interactions that allow for its usage and the basic peel-off method in the case that the extended peel-off method cannot be used. | Section 3.2 |
| Forward SPS | A version of the SPS method is applied, which differs from the SPS method only in its use of the Stretch method. In particular, during its application the Stretch method is used if and only if the direction of the photon package after scattering points toward the detector, i.e., in the forward direction. | Section 4.1 |
| Forward SePS | A version of the SePS method is applied, which differs from the SePS method only in its use of the Stretch method. In particular, during its application the Stretch method is used if and only if the direction of the photon package after scattering points toward the detector, iSaturday, January 2, 2021 at 5:59 pm.e., in the forward direction. | Section 4.1 |
| Simple SePS | A version of the SePS method is applied, which differs from the SePS method only in its use of the extended peel-off method. Instead of sending multiple peel-off photon packages from different locations on the surface of the sphere to the detector, only a single peel-off photon package is generated and sent to the detector. | Section 3.2 |
Notes. Details are provided in the referenced sections.
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