A multi-purpose reciprocating probe drive system for studying the effect of gas-puffs on edge plasma dynamics in the ADITYA-U tokamak

• DOI: 10.1063/5.0253274
• Publication Date: 2025-05-02T16:01:49Z
• Authors: Kaushlender Singh; Bharat Hegde; Ashok K. Kumawat; Ankit Kumar; M. S. Khan; Suman Dolui; Injamul Hoque; Tanmay Macwan; Sharvil Patel; Abha Kanik; Komal Yadav; Soumitra Banerjee; Harshita Raj; Devilal Kumawat; Pramila Gautam; Rohit Kumar; Suman Aich; Laxmikanta Pradhan; Ankit Patel; Kalpesh Galodiya; Abhijeet Kumar; Shwetang Pandya; K. M. Patel; K. A. Jadeja; D. C. Raval; R. Tanna; Joydeep Ghosh
• Keywords: Reciprocating motion; Dynamics

This article reports the development of a versatile high-speed reciprocating drive system (HRDS) with interchangeable probe heads to characterize edge plasma region ADITYA-U tokamak. The is driven by servo motor, which controlled PXI-commanded controller. It can be operated remotely precise control over speed, acceleration, and distance traveled head on shot-to-shot basis. HRDS-driven linear array Langmuir measurements floating potential, electron density, temperature revealed that gas puff impacts these parameters up ∼3 4 cm inside last closed flux surface (LCFS). In addition, driving an magnetic probes, facilitated fluctuations LCFS, demonstrating its versatility in supporting different diagnostic probes.