II. Workshop on ET-LF TM Tower Integration

Contribution List

6. Introduction, scope and status of ET-LF TM tower integration

Steffen Grohmann (KIT)

25/03/2025, 14:00

Status and project constraints

7. Status of infrastructure planning

Patrick Werneke

25/03/2025, 14:45

Status and project constraints

8. ET's Tower nodes: classification and subsystem integration

Romano Meijer (Nikhef)

25/03/2025, 15:30

Status and project constraints

Methodology of efforts ongoing to classify ET's towers, following from the noise budget and high-level interferometer architecture. Discussion on the set of boundary conditions that are to be established for a solution-agnostic framework, from which we can do comparative design analysis.

9. Stability analyses of IP base ring integration options

Gregory Iaquaniello

25/03/2025, 16:30

Status and project constraints

2. ET Activities at LNF: Status and Future Directions

Luisa Spallino

25/03/2025, 17:15

Status and project constraints

The primary objective of the activities conducted at LNF is to investigate and validate innovative strategies for the active mitigation of ice formation and electrostatic charging on mirrors, as well as to collaborate with EGO/Virgo on the passive mitigation of charge emission from ion pumps. These efforts are currently in progress, with preliminary results from prototype systems demonstrating...

1. The payloads for the Test Masses of the ET-LF and ET-HF interferometers: status and perspectives

Paola Puppo

26/03/2025, 09:00

Payload and super-attenuator design

The payloads are the last stage suspensions for the test masses. They are designed to fullfil the requirements coming from the control system and and the sensitivity of the detector. The status of the designs for the payloads, both in the LF and HF interferometers, will be presented.

4. The reference solution: a Superattenuator for Einstein Telescope

Francesca Spada

26/03/2025, 09:45

Payload and super-attenuator design

The Superattenuator - a cornerstone in seismic isolation systems for ground-based interferometers - is recognized as the seismic isolation reference solution for the Einstein Telescope in both the 2011 and 2020 Technical Reference Documents.
As seismic isolation system design progresses, evaluating the impact of targeted interventions on the performance of existing solutions is essential for...

3. Super-Attenuator Design Concept Integrating an Active Platform and an Inverted Pendulum

Thomas Giordano (ULiège)

26/03/2025, 11:00

Payload and super-attenuator design

This work originates from the aim of reducing the height of the 17 m suspension chain considered in the ET 2011 Conceptual Design Report and its 2020 Update. The presentation focuses on the current state of design and modelling of a candidate solution integrating both an inverted pendulum and an active platform. This key feature allows reducing the height of the seismic attenuation chain,...

5. An Active platform for the Inverted Pendulum of the Superattenuator

Franco Frasconi (INFN Pisa)

26/03/2025, 11:45

Payload and super-attenuator design

The Seismic Isolation System of the Advanced VIRGO, based on the working principle of a multi-stage pendulum hung to a three legs mechanical structure of the Inverted Pendulum, is equipped with 3 Piezoelectric actuators encapsulated with a foot structure. So far,these tools were never used to compensate seismic motion at very low frequencies regime due to missing high sensitivity sensor and...