Receivers for the Black Hole Explorer (BHEX) Mission
| Autor: | Tong, C. Edward, Akiyama, Kazunori, Grimes, Paul, Honma, Mareki, Houston, Janice, Johnson, Michael D., Marrone, Daniel P., Rana, Hannah, Uzawa, Yoshinori |
|---|---|
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Proc. SPIE Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1117/12.3018054 |
| Popis: | In this paper, we introduce the receiver architecture for the Black Hole Explorer (BHEX) Mission, designed to reveal the photon ring of black holes. The primary instrument is a dual-polarization receiver operating over the 240-320 GHz frequency range, utilizing a Superconductor-Insulator-Superconductor (SIS) mixer. This Double-Side-Band (DSB) receiver has an intermediate frequency (IF) range of 4-12 GHz and operates at a bath temperature of 4.5 K, for optimal performance, which necessitates the integration of a cryocooler. Complementing the primary receiver is a secondary unit covering the 80-106 GHz spectrum, featuring a cryogenic low noise amplifier. This secondary receiver, affixed to the 20 K stage of the cryocooler, serves to augment the SIS receiver performance by employing the Frequency Phase Transfer technique to boost the signal-to-noise ratio at the correlator output. Together, this sophisticated receiver duo is engineered to achieve the quantum-limited sensitivity required to detect the photon ring of black holes, marking a breakthrough in astrophysical observation. Comment: To be presented at the SPIE Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Waves, June 2024, Yokohama, Japan |
| Databáze: | arXiv |
| Externí odkaz: |
|