Cryogenic vessel

• Subject Area: Particles, Nuclei and Fields
• Term: Funded in 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 460951059

Within the research program supported by the Cluster of Excellence "Quantum Universe", the University of Hamburg is contributing to the realization of the prototype of the MAgnetized Disc And Mirror Axion eXperiment (MADMAX). The aim is to demonstrate the technological feasibility of realizing the first dielectric haloscope sensitive to cold dark matter axions in a mass range not yet explored (40 to 400 µeV), and for which no other, competing, experiments are planned. The axion is the hypothetical low-mass boson predicted by the Peccei-Quinn mechanism solving the strong CP problem. It is naturally also a cold dark matter candidate; thus, if detected, it could simultaneously answer two of the major open questions in physics. The MADMAX prototype will be assambled and tested in the refurbished RF-Shielded Experimental Hall (SHELL) and must be operated at liquid helium temperature in order to reduce the thermal system noise. The large device requested in this application is the cryogenic vessel including cryocoolers, and an inner, cold vacuum vessel to house and operate the MADMAX prototype.

• DFG Programme: Major Research Instrumentation
• Major Instrumentation: Kryostat für MADMAX-Prototyp
• Instrumentation Group: 8550 Spezielle Kryostaten (für tiefste Temperaturen)
• Applicant Institution: Universität Hamburg
• Leader: Professorin Dr. Erika Garutti