### Microwave Analysis with Monte Carlo Methods for ECH Transmission Lines

A new code framework, MORAMC, is presented which model transmission line (TL) systems consisting of overmoded circular waveguide and other components including miter bends and transmission line gaps. The transmission line is modeled as a set of mode converters in series where each component is composed of one or more converters. The parametrization of each mode converter can account for the fabrication tolerances of physically realizable components. These tolerances as well as the precision to which these TL systems can be installed and aligned gives a practical limit to which the uncertainty of the microwave performance of the system can be calculated. Because of this, Monte Carlo methods are a natural fit and are employed to calculate the probability distribution that a given TL can deliver a required power and mode purity. Several examples are given to demonstrate the usefulness of MORAMC in optimizing TL systems.

- Publication Date:

- Grant/Contract Number:
- AC05-00OR22725

- Type:
- Accepted Manuscript

- Journal Name:
- Journal of Infrared, Millimeter, and Terahertz Waves

- Additional Journal Information:
- Journal Volume: 39; Journal Issue: 5; Journal ID: ISSN 1866-6892

- Publisher:
- Springer

- Research Org:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

- Sponsoring Org:
- USDOE Office of Science (SC)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 47 OTHER INSTRUMENTATION

- OSTI Identifier:
- 1435269

```
Kaufman, Michael C., Lau, Cornwall H., and Hanson, Gregory R..
```*Microwave Analysis with Monte Carlo Methods for ECH Transmission Lines*. United States: N. p.,
Web. doi:10.1007/s10762-018-0475-5.

```
Kaufman, Michael C., Lau, Cornwall H., & Hanson, Gregory R..
```*Microwave Analysis with Monte Carlo Methods for ECH Transmission Lines*. United States. doi:10.1007/s10762-018-0475-5.

```
Kaufman, Michael C., Lau, Cornwall H., and Hanson, Gregory R.. 2018.
"Microwave Analysis with Monte Carlo Methods for ECH Transmission Lines". United States.
doi:10.1007/s10762-018-0475-5.
```

```
@article{osti_1435269,
```

title = {Microwave Analysis with Monte Carlo Methods for ECH Transmission Lines},

author = {Kaufman, Michael C. and Lau, Cornwall H. and Hanson, Gregory R.},

abstractNote = {A new code framework, MORAMC, is presented which model transmission line (TL) systems consisting of overmoded circular waveguide and other components including miter bends and transmission line gaps. The transmission line is modeled as a set of mode converters in series where each component is composed of one or more converters. The parametrization of each mode converter can account for the fabrication tolerances of physically realizable components. These tolerances as well as the precision to which these TL systems can be installed and aligned gives a practical limit to which the uncertainty of the microwave performance of the system can be calculated. Because of this, Monte Carlo methods are a natural fit and are employed to calculate the probability distribution that a given TL can deliver a required power and mode purity. Several examples are given to demonstrate the usefulness of MORAMC in optimizing TL systems.},

doi = {10.1007/s10762-018-0475-5},

journal = {Journal of Infrared, Millimeter, and Terahertz Waves},

number = 5,

volume = 39,

place = {United States},

year = {2018},

month = {3}

}