Refinement and Modeling of a Blackbody-Based Calibration Method in the InfraBREAD Detector
- Minnesota U.
- Fermilab
The Broadband Reflector Experiment for Axion Detection (BREAD) is an ongoing experiment searching for the conversion of yet undiscovered axion-like dark matter particles to photons in the presence of a magnetic field. InfraBREAD, a sub-experiment of BREAD, uses a superconducting nanowire single photon detector (SNSPD), a high-efficiency and low-noise device, to specifically detect infrared-range photons produced by $$\mathcal{O}$$(eV) axion-like particles. The unique BREAD reflector setup allows for the focusing of all converted signal photons to a 1mm $$\times$$ 1mm SNSPD. However, when the detector is cooled to cryogenic temperatures during operation, uneven thermal contraction of reflector components may lead to a small shift in the location of the focal spot. A novel calibration method using blackbody radiation is proposed to locate the true focal spot of the detector \textit{in situ}. Through ray tracing simulations done in FRED Optical Engineering Software, this method is demonstrated to locate the focus to within 50 $$\mu$$m in three dimensions.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Contributing Organization:
- BREAD
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 2426576
- Report Number(s):
- FERMILAB-SLIDES-24-0185-STUDENT; oai:inspirehep.net:2814319
- Country of Publication:
- United States
- Language:
- English
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