# Options

Options — MC Grating documentation for Chandezon Collinear and Chandezon Conical. If the Save Settings box is checked then all Scanning, Fields and Options…

Canonical: https://mcgrating.com/docs/chandezon/options.html


Written by Nikolay M. LyndinLast revised 2017-04-10

This documentation was written for releases up to 2018 and is being revised. Some dialogs have changed since. If something does not match what you see, write to [mc@mcgrating.com](mailto:mc@mcgrating.com).

- If the ***Save Settings*** box is checked then all ***[Scanning](https://mcgrating.com/docs/chandezon/scanning.html), [Fields](https://mcgrating.com/docs/common/fields.html)*** and ***Options*** parameters will be saved in the structure file in addition to the parameters from the ***[General](https://mcgrating.com/docs/chandezon/general.html), [Layers](https://mcgrating.com/docs/chandezon/layers.html) ***and ***[Grating](https://mcgrating.com/docs/chandezon/grating.html)*** pages. The part of the structure text file with settings is hidden for the user but accessible with any external text redactor.
- The check box*** Background calculation*** disables the output to the result editor window during the calculation process.
- If the ***Decomposition Order Correction*** box is checked, then if necessary the software will automatically increase the value of ***Minimal Order of Field Decomposition*** to the maximum absolute value of the diffraction orders.
- If the check box ***Add Virtual Interfaces*** is checked then two additional hidden to the user interfaces are placed in the cover and in the substrate. Each interface has the same grating profile as the adjacent interface and is separated from it by the appropriate grating depth. This option improves the reliability of the structure field matching with the field of the cover and substrate waves. In the extended method the user can replace this option by manually placing two plane interfaces in the cover and substrate.
- Check box ***Advanced Options*** is visible if the structure contains sections of ***Advanced Options***. If the ***Advanced Options*** check box is not checked, the software ignores the ***Advanced Options*** sections in the structure.
- For the Field calculation and to activate the page ***[Fields](https://mcgrating.com/docs/common/fields.html)*** the box ***Field Calculation*** should be checked at that the page ***[Scanning](https://mcgrating.com/docs/chandezon/scanning.html)*** becomes inactive. The ***Autoselect*** check box allows enabling/disabling of a conformation dialog appearance while the user enters the ***[Fields](https://mcgrating.com/docs/common/fields.html)*** or ***[Scanning](https://mcgrating.com/docs/chandezon/scanning.html)*** disabled pages. The fields are calculated in two steps: calculation of the structure for the fixed parameters followed by the field distribution calculation in accordance to the page ***[Fields](https://mcgrating.com/docs/common/fields.html)*** settings.
- If the ***Automatically Start Second Stage*** box is not checked, then the calculation will be stopped after the first step and the user should press ***Run*** to proceed with the second step. This option is useful to check the intermediate results in the editor window. Changes in page ***[Fields](https://mcgrating.com/docs/common/fields.html)*** do not activate the first step.
- For a reasonable response of the other windows applications it is not recommended to increase the*** Calculation Priority ***greater than Idle.
- ***Calculation Direction*** option is useful for calculation of structures with a uniform layers stack. Calculation is faster if it starts from this stack section.
- About ***Method of Field Connection*** (available only for the extended method) see the reference 4 of used sources in ***[Introduction](https://mcgrating.com/docs/chandezon/introduction.html)***.

From the in-application help of Chandezon Collinear and Chandezon Conical, documented through 2018. If you publish results computed with MC Grating, see [how to cite it](https://mcgrating.com/references.html#cite).