Abstract
An all-reflective telescope based optical pyrometer has been designed and built to collect thermal radiation from a nanocrystalline diamond foil in harsh radiation environment at the Spallation Neutron Source accelerator. The primary use of this instrument is to monitor the foil temperature remotely while it is being bombarded by negative hydrogen ion beams with 1.4 MW power at 1.0 GeV energy. The pyrometer is composed of 4.0” Cassegrain reflector with f/10 configuration, two InGaAs PIN photodiodes, a dichroic mirror, two bandpass filters centered around 1000 nm and 1550 nm, a CMOS camera, and a pinhole mirror with 200 um diameter hole size. It is located 40 m from the foil in the accelerator. The measurement uncertainties demonstrated in this work was better than 2.5% for the temperature range of 1000 K to 2500 K. The design of the optical system, calibration with blackbody source and the temporally resolved measurements made with this pyrometer will be presented.
| Original language | English |
|---|---|
| Title of host publication | Infrared Remote Sensing and Instrumentation XXVIII |
| Editors | Marija Strojnik |
| Publisher | SPIE |
| ISBN (Electronic) | 9781510638105 |
| DOIs | |
| State | Published - 2020 |
| Event | Infrared Remote Sensing and Instrumentation XXVIII 2020 - Virtual, Online, United States Duration: Aug 24 2020 → Sep 4 2020 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 11502 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 1996-756X |
Conference
| Conference | Infrared Remote Sensing and Instrumentation XXVIII 2020 |
|---|---|
| Country/Territory | United States |
| City | Virtual, Online |
| Period | 08/24/20 → 09/4/20 |
Funding
This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan. Further author information: (Send correspondence to A.R.) A.R.: E-mail: [email protected] This manuscript has been authored by UT-Battelle, LLC, under Contract No. U.S. Department of Energy.
Keywords
- Cassegrain
- Non-contact thermometry
- Pyrometry
- Radiometric measurement