IV Workshop on ET-LF TM Tower Integration

18 Mar 2026, 09:00 → 20 Mar 2026, 17:00 Europe/Rome

Room 131 - Galileo Galilei (ground floor) (INFN Sezione di Pisa)

Franco Frasconi (INFN Pisa)

The ET-ISB Division I - Suspension and ET-ISB Division IV - Vacuum and Cryogenics are organizing the 4th joint workshop to advance ET-Low Frequency Test-Mass tower integration concepts

The Advanced VIRGO mirror and payload (by M. Perciballi)

About Pisa Edition

The workshop objectives are the following:

• Status of Seismic Isolation System (SIS)
• Tower integration of cryostat and SuperAttenuator (SA)
• Planning towards a ET-LF TM tower baseline design

 

The meeting will last 3 days: from 18 to 20  March  2026

The workshop has a limited number of participants so that the chairmen will let you know if you can participate once correctly registered. 

Chairs: Steffen Grohmann (steffen.grohmann@kit.edu), Fulvio Ricci (fulvio.ricci@roma1.infn.it) and Roberto Cimino (Roberto.Cimino@lnf.infn.it)

Local Organizer: Franco Frasconi (franco.frasconi@pi.infn.it), Lucia Lilli (lucia.lilli@pi.infn.it), Claudia Tofani (claudia.tofani@pi.infn.it)

Participants (partial group) to the IV Workshop ET-LF visiting the EGO/VIRGO site, Cascina (PI), March 18, 2026.

Summary and Minutes of the Meeting available at the link:

https://apps.et-gw.eu/tds/ql/?c=18551

 

Wednesday 18 March

09:00 → 09:30 Registration: Registration and welcome

09:30 → 11:00 First working day: Infrastructure and Vacuum System

Convener: Franco Frasconi (INFN Pisa)

09:30 Update from ETO Engineering Department

Speaker: Dr Patrick Werneke (NIKHEF)

Update from ETO Engineering Department 18Mar25.pptx

10:00 3D Spatial Integration Plan for the Einstein Telescope

Speaker: Dr Lucas Harmida Pena (NIKHEF)

Pisa_LFTIW_2026_LHP.pptx

10:30 Towards common boundary conditions for Integrated Tower systems

Speaker: Dr Romano Maijer (NIKHEF)

LF_TM_integration_workshop_Pisa_v1_RM.pptx

11:00 → 11:30 Coffee Break

11:30 → 12:45 First working day: Infrastructure and Vacuum System

Convener: Franco Frasconi (INFN Pisa)

11:30 Central Vacuum System PRE-TDR Design

Speaker: Dr Antonio Pasqualetti (EGO)

workshop_pisa_elftower.pdf

12:15 Possible Investigation of the Warm Tower Concept

Speaker: Dr Alessio Buggiani (EGO)

EGO-260313-ET-PossibleInvestigationOfTheWarmTowerConcept-Rev01.pptx

12:45 → 14:00 Lunch at INFN Pisa

14:00 → 17:30 First working day: Visit EGO/VIRGO site (Cascina)

Convener: Franco Frasconi (INFN Pisa)

Thursday 19 March

09:30 → 11:00 Second working day: Activity 1

Convener: Prof. Fulvio Ricci (INFN Roma1)

09:30 Progress on the overall modelling of cryogenic payload

Speaker: Dr Manuel Pinto (EGO)

Progress on the overall modelling of cryogenic payload.pdf

10:00 ET-LF tower structural design on mirror dynamics

Speaker: Prof. Ettore Majorana (INFN Roma1 & University Sapienza)

TOWER_CONCEPT_PISA2026.pdf

10:30 Status of cryo-payload work at INFN Rome

Speaker: Dr Paola Puppo (INFN Roma1)

PisaIVETTowerIntW__March2026.pdf

11:00 → 11:30 Coffee Break

11:30 → 13:00 Second working day: Activity 2

Convener: Prof. Fulvio Ricci (INFN Roma1)

11:30 Updates on seismic isolation system of E-TEST

Speaker: Dr Thomas Giordano (University of Liege)

IV_ET-LF-TM_Workshop_March1926_Giordano.pdf

12:00 Activities at LNF: Progress and future Perspectives

Speaker: Dr Marco Angelucci (LNF)

12:30 Free slot for talk

13:00 → 14:00 Lunch Break at INFN Pisa

14:30 → 16:00 Second working day: Activity 3

Conveners: Franco Frasconi (INFN Pisa), Prof. Fulvio Ricci (INFN Roma1), Prof. Steffen Grohmann (ITTK Karlsruhe)

14:30 Cryogenic modelling, sensing and actuation in the ET-LF tower cryostat

Speaker: Dr Joris Heijningen (NIKHEF)

20250320_CryoNikhef_JvH_pdf.pdf

15:15 Free slot for talk

16:00 → 16:30 Tea Break

16:30 → 17:30 Second working day: Discussion and Summary of the first part of the Workshop

20:00 → 21:30 Social Dinner - Restaurant: "La Pergoletta" - Via delle Belle Torri , 40 - Pisa

Friday 20 March

09:30 → 11:00 Last working day: Cryogenics

Convener: Prof. Steffen Grohmann (ITTK Karlsruhe)

09:30 Auxiliary Cryogenic Pumping in the Central Area

Speaker: Dr Julien Gargiulo (EGO)

Auxiliary Cryogenic Pumping in the Central Area

10:00 Experimental investigations of monolithic cryogenic payload suspensions for the Einstein Telescope at KEK

Speaker: Dr Xhesika Koroveshi (KIT)

260320_Q-Measurements @ KEK-GW_XK.pdf

10:30 Updates of the E-TEST-based candidate solution for the ET-LF suspension

Speaker: Dr Thomas Giordano (University of Liege)

11:00 → 11:45 Coffee Break

11:45 → 13:15 Last working day: Cryogenics - part. 2 -

Convener: Prof. Steffen Grohmann (ITTK Karlsruhe)

11:45 Progress report on the construction of GRAVITHELIUN news

Speaker: Dr Timo Weckerle (KIT)

GRAVITHELIUM_Progress.pdf

12:15 Status and Activity summary at Cal State University of Los Angeles

Speaker: Dr Riccardo De Salvo (California State University LA)

ET-0160A-26_OverviewOfCalStateLAPresentati.pptx

12:45 Free slot for talk to be assigned

13:15 → 14:45 Lunch Break at INFN Pisa

14:45 → 16:00 Last working day: Conclusions

Convener: Prof. Steffen Grohmann (ITTK Karlsruhe)