The Gemini Planet Imager (GPI) is undergoing a number of upgrades as part of the process of moving the instrument from Gemini South to Gemini North. The upgraded instrument (GPI2.0) will include a new Real- Time Controller (RTC) that drives the eXtreme Adaptive Optics (XAO) system, which is composed of a new high-sensitivity Natural Guide Star (NGS) Pyramid Wavefront Sensor (PWFS), and the existing two Deformable Mirrors (DMs) and Tip/Tilt Stage (TTS) at loop rates up to 2 kHz with very low latency. The new RTC is based on the Herzberg Extensible Adaptive Real-time Toolkit (HEART), which is a collection of libraries and other software that can be used to control different types of Adaptive Optics (AO) systems. HEART’s configurability and flexibility lends itself well to GPI2.0 RTC. This paper explores how HEART functionality is used and configured to construct the GPI2.0 RTC.
In July of 2020 the Herzberg Astronomy and Astrophysics Research Centre was contracted to provide the Gemini Telescopes Observatory with a facility class Adaptive Optics (AO) Real Time Controller (RTC) suitable to run existing and future Adaptive Optics Systems. This Gemini Adaptive Optics Real-Time Controller (GAO RTC) is using the Herzberg Extensible Adaptive Real-time Toolkit (HEART), a C/Python software framework for constructing RTCs that targets general-purpose CPUs and standard networking hardware. Initially a fully simulated stand-alone RTC will be completed which will be suitable for experimentation in association with end-to-end AO simulation software. Subsequently, it will be reconfigured and extended to support hardware interfaces to the future Gemini North Adaptive Optics (GNAO) facility. This paper will provide an overview of the customization of the HEART design for GNAO, current state of the development, how this system state changes during operation, and how HEART was de-risked.
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