The MADMAX Experiment

Blog Credit : Trupti Thakur

Image Courtesy : Google

The MADMAX Experiment

Recent developments in dark matter research highlight the ongoing efforts to detect elusive particles that may constitute this mysterious substance. The MAgnetized Disk and Mirror Axion eXperiment (MADMAX) has emerged as a promising initiative. It aims to identify dark matter candidates. Despite challenges in detection, the MADMAX experiment has shown potential through innovative methodologies.

About Dark Matter Candidates

Dark matter is believed to make up about 27% of the universe. Axions and dark photons are two leading candidates for its composition. Axions are hypothetical particles that could resolve several theoretical issues in particle physics. Dark photons are heavier counterparts to regular photons and may interact with normal matter under specific conditions.

The MADMAX Experiment

MADMAX employs a unique detection approach. It uses a sophisticated instrument consisting of a stack of sapphire disks and a reflective mirror. The primary goal is to detect dark photons, which can convert into ordinary photons. The experiment utilises a resonator to enhance this conversion process, enabling better detection capabilities.

Experimental Design and Methodology

The experimental setup includes a resonator designed to boost photon conversion. This resonator comprises parallel dielectric disks, allowing for larger resonators than previous designs. The MADMAX team employs a microwave receiver system to measure the output power from this setup. They specifically search for signals that indicate the presence of dark photons, looking for a distinct frequency amidst background noise.

Initial Findings and Future Prospects

The first search for dark photons using the MADMAX prototype did not yield detectable signals linked to these particles. However, it demonstrated the experiment’s potential. The sensitivity achieved was higher than in past experiments. Future upgrades are planned to enhance the detection capabilities further. This includes cooling the setup to reduce thermal noise and increasing the size of the resonator.

Future Directions of MADMAX

Upcoming iterations of the MADMAX experiment will operate in a strong magnetic field. This will enable simultaneous searches for both dark photons and axions. Researchers aim to refine their techniques, expanding the range of masses they can explore. These advancements could contribute to our understanding of dark matter.

 

 

Blog By : Trupti Thakur