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Hauptverfasser: Zoccheddu, Sara, Qasim, Shah Rukh, Owen, Patrick, Serra, Nicola
Format: Preprint
Veröffentlicht: 2026
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Online-Zugang:https://arxiv.org/abs/2601.07580
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author Zoccheddu, Sara
Qasim, Shah Rukh
Owen, Patrick
Serra, Nicola
author_facet Zoccheddu, Sara
Qasim, Shah Rukh
Owen, Patrick
Serra, Nicola
contents We study the use of large language models (LLMs) for physics instrument design and compare their performance to reinforcement learning (RL). Using only prompting, LLMs are given task constraints and summaries of prior high-scoring designs and propose complete detector configurations, which we evaluate with the same simulators and reward functions used in RL-based optimization. Although RL yields stronger final designs, we find that modern LLMs consistently generate valid, resource-aware, and physically meaningful configurations that draw on broad pretrained knowledge of detector design principles and particle--matter interactions, despite having no task-specific training. Based on this result, as a first step toward hybrid design workflows, we explore pairing the LLMs with a dedicated trust region optimizer, serving as a precursor to future pipelines in which LLMs propose and structure design hypotheses while RL performs reward-driven optimization. Based on these experiments, we argue that LLMs are well suited as meta-planners: they can design and orchestrate RL-based optimization studies, define search strategies, and coordinate multiple interacting components within a unified workflow. In doing so, they point toward automated, closed-loop instrument design in which much of the human effort required to structure and supervise optimization can be reduced.
format Preprint
id arxiv_https___arxiv_org_abs_2601_07580
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Large Language Models for Physics Instrument Design
Zoccheddu, Sara
Qasim, Shah Rukh
Owen, Patrick
Serra, Nicola
Instrumentation and Detectors
Artificial Intelligence
Machine Learning
High Energy Physics - Experiment
We study the use of large language models (LLMs) for physics instrument design and compare their performance to reinforcement learning (RL). Using only prompting, LLMs are given task constraints and summaries of prior high-scoring designs and propose complete detector configurations, which we evaluate with the same simulators and reward functions used in RL-based optimization. Although RL yields stronger final designs, we find that modern LLMs consistently generate valid, resource-aware, and physically meaningful configurations that draw on broad pretrained knowledge of detector design principles and particle--matter interactions, despite having no task-specific training. Based on this result, as a first step toward hybrid design workflows, we explore pairing the LLMs with a dedicated trust region optimizer, serving as a precursor to future pipelines in which LLMs propose and structure design hypotheses while RL performs reward-driven optimization. Based on these experiments, we argue that LLMs are well suited as meta-planners: they can design and orchestrate RL-based optimization studies, define search strategies, and coordinate multiple interacting components within a unified workflow. In doing so, they point toward automated, closed-loop instrument design in which much of the human effort required to structure and supervise optimization can be reduced.
title Large Language Models for Physics Instrument Design
topic Instrumentation and Detectors
Artificial Intelligence
Machine Learning
High Energy Physics - Experiment
url https://arxiv.org/abs/2601.07580