Associate Research Scientist in the Columbia Astrophysics Laboratory

Position Description

The Columbia Astrophysics Laboratory (CAL) invites applications for an Associate Research Scientist (ARS) position dedicated to the direct search for dark matter using noble liquid technologies. The successful candidate will join the research group of Prof. Elena Aprile and play a leading role in the group’s contributions to the XENONnT and DarkSide-20k experiments.

The ARS will be responsible for the further development, integration, and operation of large-scale cryogenic and purification systems (liquid- and gas-phase) for both argon and xenon. This role involves leading local R&D efforts at Columbia University to develop novel purification systems, distillation technologies, and the operation of existing detector setups. Key duties include performing thermodynamic modeling of cryogenic systems, conducting high-level analysis of XENONnT data, and supporting the commissioning phase of the DarkSide-20k experiment.

The position requires significant field work at the Laboratori Nazionali del Gran Sasso (LNGS) in Italy, including frequent travel and extended stays for on-site commissioning and operations. Additionally, the ARS is expected to supervise and mentor postdoctoral researchers, graduate students, and undergraduate students, while taking an independent lead in bringing research projects to publication.

Qualifications

Minimum Qualifications:

• Ph.D. in Physics, Astrophysics, or a closely related field.
• A minimum of three years of postdoctoral research experience.
• Proven track record of high-impact publications in peer-reviewed journals.
• Demonstrated ability to design, develop, operate, and independently lead complex experimental projects.

Preferred Qualifications:

• Extensive experience in direct dark matter detection using noble liquids (xenon and argon).
• Proven expertise in the design, operation, and management of large-scale cryogenic and high-purity systems.
• Hands-on experience with process and instrumentation diagrams (P&IDs) and the implementation of control systems.
• Proficiency in Python for thermodynamic modeling and scientific computing.
• Experience with CAD software for the mechanical design of vacuum and pressure systems.
• Strong background in data analysis within large-scale particle physics collaborations.
• Experience in the commissioning of international experimental facilities and the ability to coordinate technical interfaces across multiple institutions.

Application Instructions

All applications must be made through Columbia University’s Academic Search and Recruiting (ASR) system. Applicants should submit a cover letter, a curriculum vita (including a list of publications), a statement of past research (three-page limit), and contact information for two references, who will be asked to provide a confidential letter of recommendation. Applications will be considered complete only after all requested material has been received. Review of completed applications will begin immediately and will continue until the position is filled.