The TESS camera: modeling and measurements with deep depletion devices
The Transiting Exoplanet Survey Satellite, a NASA Explorer-class mission in development, will discover planets around nearby stars, most notably Earth-like planets with potential for follow up characterization. The all-sky survey requires a suite of four wide field-of-view cameras with sensitivity a...
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Published: |
SPIE
2018
|
| Online Access: | http://hdl.handle.net/1721.1/115318 https://orcid.org/0000-0001-7149-2792 https://orcid.org/0000-0003-2058-6662 |
| _version_ | 1826203415271702528 |
|---|---|
| author | Woods, Deborah F. Vanderspek, Roland K MacDonald, Robert E. Morgan, Edward H Villasenor, Jesus Noel Samonte Thayer, Carolyn T. Burke, Barry E. Chesbrough, Christian D. Chrisp, Michael P. Clark, Kristin E. Gonzales, Alexandria Nguyen, Tam Prigozhin, Gregory Primeau, Brian Sauerwein, Timothy A Furesz, Gabor Ricker, George R Suntharalingam, Vyshnavi |
| author2 | Lincoln Laboratory |
| author_facet | Lincoln Laboratory Woods, Deborah F. Vanderspek, Roland K MacDonald, Robert E. Morgan, Edward H Villasenor, Jesus Noel Samonte Thayer, Carolyn T. Burke, Barry E. Chesbrough, Christian D. Chrisp, Michael P. Clark, Kristin E. Gonzales, Alexandria Nguyen, Tam Prigozhin, Gregory Primeau, Brian Sauerwein, Timothy A Furesz, Gabor Ricker, George R Suntharalingam, Vyshnavi |
| author_sort | Woods, Deborah F. |
| collection | MIT |
| description | The Transiting Exoplanet Survey Satellite, a NASA Explorer-class mission in development, will discover planets around nearby stars, most notably Earth-like planets with potential for follow up characterization. The all-sky survey requires a suite of four wide field-of-view cameras with sensitivity across a broad spectrum. Deep depletion CCDs with a silicon layer of 100 μm thickness serve as the camera detectors, providing enhanced performance in the red wavelengths for sensitivity to cooler stars. The performance of the camera is critical for the mission objectives, with both the optical system and the CCD detectors contributing to the realized image quality. Expectations for image quality are studied using a combination of optical ray tracing in Zemax and simulations in Matlab to account for the interaction of the incoming photons with the 100 μm silicon layer. The simulations include a probabilistic model to determine the depth of travel in the silicon before the photons are converted to photo-electrons, and a Monte Carlo approach to charge diffusion. The charge diffusion model varies with the remaining depth for the photo-electron to traverse and the strength of the intermediate electric field. The simulations are compared with laboratory measurements acquired by an engineering unit camera with the TESS optical design and deep depletion CCDs. In this paper we describe the performance simulations and the corresponding measurements taken with the engineering unit camera, and discuss where the models agree well in predicted trends and where there are differences compared to observations. |
| first_indexed | 2024-09-23T12:36:13Z |
| format | Article |
| id | mit-1721.1/115318 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:36:13Z |
| publishDate | 2018 |
| publisher | SPIE |
| record_format | dspace |
| spelling | mit-1721.1/1153182022-09-28T08:58:20Z The TESS camera: modeling and measurements with deep depletion devices Woods, Deborah F. Vanderspek, Roland K MacDonald, Robert E. Morgan, Edward H Villasenor, Jesus Noel Samonte Thayer, Carolyn T. Burke, Barry E. Chesbrough, Christian D. Chrisp, Michael P. Clark, Kristin E. Gonzales, Alexandria Nguyen, Tam Prigozhin, Gregory Primeau, Brian Sauerwein, Timothy A Furesz, Gabor Ricker, George R Suntharalingam, Vyshnavi Lincoln Laboratory Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences MIT Kavli Institute for Astrophysics and Space Research Woods, Deborah F. Vanderspek, Roland K MacDonald, Robert E. Morgan, Edward H Villasenor, Jesus Noel Samonte Thayer, Carolyn T. Burke, Barry E. Chesbrough, Christian D. Chrisp, Michael P. Clark, Kristin E. Gonzales, Alexandria Nguyen, Tam Prigozhin, Gregory Primeau, Brian Sauerwein, Timothy A Furesz, Gabor Ricker, George R Suntharalingam, Vyshnavi The Transiting Exoplanet Survey Satellite, a NASA Explorer-class mission in development, will discover planets around nearby stars, most notably Earth-like planets with potential for follow up characterization. The all-sky survey requires a suite of four wide field-of-view cameras with sensitivity across a broad spectrum. Deep depletion CCDs with a silicon layer of 100 μm thickness serve as the camera detectors, providing enhanced performance in the red wavelengths for sensitivity to cooler stars. The performance of the camera is critical for the mission objectives, with both the optical system and the CCD detectors contributing to the realized image quality. Expectations for image quality are studied using a combination of optical ray tracing in Zemax and simulations in Matlab to account for the interaction of the incoming photons with the 100 μm silicon layer. The simulations include a probabilistic model to determine the depth of travel in the silicon before the photons are converted to photo-electrons, and a Monte Carlo approach to charge diffusion. The charge diffusion model varies with the remaining depth for the photo-electron to traverse and the strength of the intermediate electric field. The simulations are compared with laboratory measurements acquired by an engineering unit camera with the TESS optical design and deep depletion CCDs. In this paper we describe the performance simulations and the corresponding measurements taken with the engineering unit camera, and discuss where the models agree well in predicted trends and where there are differences compared to observations. 2018-05-11T15:04:57Z 2018-05-11T15:04:57Z 2016-06 2018-03-16T19:01:18Z Article http://purl.org/eprint/type/ConferencePaper http://hdl.handle.net/1721.1/115318 Woods, Deborah F., et al. "The TESS Camera: Modeling and Measurements with Deep Depletion Devices." Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 26 June - 1 July, 2016, Edinburgh, United Kingdom, edited by Howard A. MacEwen et al., 2016, p. 99042C. © 2016 SPIE https://orcid.org/0000-0001-7149-2792 https://orcid.org/0000-0003-2058-6662 http://dx.doi.org/10.1117/12.2231296 Proceedings Volume 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf SPIE SPIE |
| spellingShingle | Woods, Deborah F. Vanderspek, Roland K MacDonald, Robert E. Morgan, Edward H Villasenor, Jesus Noel Samonte Thayer, Carolyn T. Burke, Barry E. Chesbrough, Christian D. Chrisp, Michael P. Clark, Kristin E. Gonzales, Alexandria Nguyen, Tam Prigozhin, Gregory Primeau, Brian Sauerwein, Timothy A Furesz, Gabor Ricker, George R Suntharalingam, Vyshnavi The TESS camera: modeling and measurements with deep depletion devices |
| title | The TESS camera: modeling and measurements with deep depletion devices |
| title_full | The TESS camera: modeling and measurements with deep depletion devices |
| title_fullStr | The TESS camera: modeling and measurements with deep depletion devices |
| title_full_unstemmed | The TESS camera: modeling and measurements with deep depletion devices |
| title_short | The TESS camera: modeling and measurements with deep depletion devices |
| title_sort | tess camera modeling and measurements with deep depletion devices |
| url | http://hdl.handle.net/1721.1/115318 https://orcid.org/0000-0001-7149-2792 https://orcid.org/0000-0003-2058-6662 |
| work_keys_str_mv | AT woodsdeborahf thetesscameramodelingandmeasurementswithdeepdepletiondevices AT vanderspekrolandk thetesscameramodelingandmeasurementswithdeepdepletiondevices AT macdonaldroberte thetesscameramodelingandmeasurementswithdeepdepletiondevices AT morganedwardh thetesscameramodelingandmeasurementswithdeepdepletiondevices AT villasenorjesusnoelsamonte thetesscameramodelingandmeasurementswithdeepdepletiondevices AT thayercarolynt thetesscameramodelingandmeasurementswithdeepdepletiondevices AT burkebarrye thetesscameramodelingandmeasurementswithdeepdepletiondevices AT chesbroughchristiand thetesscameramodelingandmeasurementswithdeepdepletiondevices AT chrispmichaelp thetesscameramodelingandmeasurementswithdeepdepletiondevices AT clarkkristine thetesscameramodelingandmeasurementswithdeepdepletiondevices AT gonzalesalexandria thetesscameramodelingandmeasurementswithdeepdepletiondevices AT nguyentam thetesscameramodelingandmeasurementswithdeepdepletiondevices AT prigozhingregory thetesscameramodelingandmeasurementswithdeepdepletiondevices AT primeaubrian thetesscameramodelingandmeasurementswithdeepdepletiondevices AT sauerweintimothya thetesscameramodelingandmeasurementswithdeepdepletiondevices AT fureszgabor thetesscameramodelingandmeasurementswithdeepdepletiondevices AT rickergeorger thetesscameramodelingandmeasurementswithdeepdepletiondevices AT suntharalingamvyshnavi thetesscameramodelingandmeasurementswithdeepdepletiondevices AT woodsdeborahf tesscameramodelingandmeasurementswithdeepdepletiondevices AT vanderspekrolandk tesscameramodelingandmeasurementswithdeepdepletiondevices AT macdonaldroberte tesscameramodelingandmeasurementswithdeepdepletiondevices AT morganedwardh tesscameramodelingandmeasurementswithdeepdepletiondevices AT villasenorjesusnoelsamonte tesscameramodelingandmeasurementswithdeepdepletiondevices AT thayercarolynt tesscameramodelingandmeasurementswithdeepdepletiondevices AT burkebarrye tesscameramodelingandmeasurementswithdeepdepletiondevices AT chesbroughchristiand tesscameramodelingandmeasurementswithdeepdepletiondevices AT chrispmichaelp tesscameramodelingandmeasurementswithdeepdepletiondevices AT clarkkristine tesscameramodelingandmeasurementswithdeepdepletiondevices AT gonzalesalexandria tesscameramodelingandmeasurementswithdeepdepletiondevices AT nguyentam tesscameramodelingandmeasurementswithdeepdepletiondevices AT prigozhingregory tesscameramodelingandmeasurementswithdeepdepletiondevices AT primeaubrian tesscameramodelingandmeasurementswithdeepdepletiondevices AT sauerweintimothya tesscameramodelingandmeasurementswithdeepdepletiondevices AT fureszgabor tesscameramodelingandmeasurementswithdeepdepletiondevices AT rickergeorger tesscameramodelingandmeasurementswithdeepdepletiondevices AT suntharalingamvyshnavi tesscameramodelingandmeasurementswithdeepdepletiondevices |