Reply to "Comment on Nuclear Fusion 66, 016012 (2026) by Richard Fitzpatrick, A Simple Model of Current Ramp-Up and Ramp-Down in Tokamaks" by A.H. Boozer

TL;DR

This paper responds to comments on a previous tokamak current ramp model, clarifying its assumptions and implications in light of recent critique, and aims to refine understanding of current control in fusion devices.

Contribution

It provides a detailed reply to critiques of the original model, addressing specific points and clarifying the model's assumptions and applicability.

Findings

Clarifies the assumptions of the original model

Addresses specific critiques raised by Boozer

Reinforces the model's relevance to tokamak current control

Abstract

This report is a follow up to my paper "A simple model of current ramp-up and ramp-down in tokamaks" [Nucl. Fusion 66, 016012 (2026)] in the light of comments on the paper recently made by Dr. A.H. Boozer (arXiv:2601.05977).