Observing Run O1: The Big Picture and Event Candidate Selection
Plans for the First Observing Run (O1) in the LIGO-Virgo EM Follow-up Program involving GEO 600, LIGO Hanford, KAGRA, Virgo, LIGO Livingston, and LIGO-India. Details on data transfer, quality validation, event candidate selection, preliminary alerts, interpretation, updated information, and validati
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Planning for Commissioning Experts Exchange Program
Initiating discussions on inviting experts from LIGO-Virgo Collaboration to assist with commissioning activities at KAGRA. Budget sources and possible programs identified. Key considerations include determining who to invite, when, and how to apply for the exchange program. Past experiences with Vir
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External Review on Control and Tuning of Suspension Systems by Takanori Sekiguchi
Overview of the control design and implementation of digital systems for the KAGRA suspension control, focusing on local controls for SAS, GAS filter controller, IP controller, and noise study. Details include the purpose, configuration, and strategies for controlling thermal drift, mechanical reson
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Update on O3 LIGO-Virgo-KAGRA Project and Commissioning Plan Milestones
Updates on the O3 LIGO-Virgo-KAGRA project, including detector performance, alerts, retractions, and the upcoming commissioning break. The status and milestones of KAGRA commissioning plan are also outlined, with details on noise hunting, beam alignment, cooling systems, and other key activities.
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Understanding Newtonian Noise in Gravity Gradient Measurements
Investigating the impact of Newtonian Noise (NN) on various detectors and instruments used for measuring gravity gradients. The content delves into the frequency ranges affected by NN in detectors like LIGO, AdVirgo, and KAGRA, as well as the influence of infrasound and seismic waves. The discussion
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Type B Installation Plan Update for KAGRA Project Chiefs Meeting
Detailed overview of the current status and plans for the installation of Type B components in the KAGRA project, including scope, team members, installation procedures, schedule, and status updates for both BS and SRx components. The assembly frame is being constructed with detailed procedures and
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Updates on iKAGRA Installation and Configuration Changes
The report discusses changes in the iKAGRA configuration from Fabry-Perot Michelson Interferometer to Michelson Interferometer due to schedule constraints and budget limitations. The document outlines the revised schedule for installation tasks, shift applications, and the impact on the KAGRA projec
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