GravNet Collaboration Meeting

Jun 26, 2025, 9:00 AM → Jun 27, 2025, 5:00 PM Europe/Berlin

1395/00-111 - Meeting Room Ground Floor I (HIM)

GravNet - Searching for High Frequency Gravitational Waves with a Global Detector Network

Location: University of Mainz, Germany

Date: Thursday, 26th of June 2025 to Friday, 27th of June 2025

 

The idea of searching for high frequency gravitational waves has recently received significant attention. GravNet (Global Network of Cavities to Search for Gravitational Waves) is a novel experimental scheme enabling the search for gravitational waves with MHz frequencies and above, which could be caused for example by primordial black hole mergers. The scheme is based on synchronous measurements of signals from several experimental setup at distant locations. Although signatures of gravitational waves may be present as identifiable signals in a single cavity, it is highly challenging to distinguish them from noise. By analysing the correlation between signals from multiple, geographically separated cavities, it is not only possible to increase substantially the signal over noise ratio, but also to investigate the nature and the source of those gravitational wave signatures.

This is the first international meeting of GravNet, aiming to extend the collaboration across the globe. We will discuss how to optimally setup the network, design the underlying technical infrastructure as well as how to integrate as many experimental sites as possible. The workshop will be hosted at the University of Mainz, Germany. The participation is free of any registration fees. Special funds to support the participation of junior researchers might become available.

 

Travel
Mainz can easily be reached via plane, train and by car. The closest airport is Frankfurt (FRA). From there trains brings you in half an hour to Mainz central station (Mainz Hbf). You can take either the regional train or the S-Bahn S8 in the direction Wiesbaden.

From Mainz central station trams 51 and 53 as well as buses 54, 55, 56, 57, 58, and 68 bring you to the university in 5 min. Schedule can be checked at https://www.rmv.de. The closest stops is called "University".

Parking on the university campus is not possible. The closest public (free) parking is called Parkplatz Dahlheimer Weg - Uni Mainz.

Accommodation
Mainz is a beautiful city which offers many possibilities for accommodation which you can find via the usual booking portals. Some well located hotels are 

• https://www.hotel-koenigshof-mainz.de
• https://www.hotel-hammer.com
• https://hrewards.com/de/intercityhotel-mainz

 

Thu, June 26

1 Matthais Schott: Welcome to the GravNet meeting @ Mainz!

2 Dmitry Budker: Introduction to GravNet (the four pillars) (15' + 5' discussion)

3 Diego Blas: Theory Highlights (15' + 5' discussion)

4 Claudio Gatti: Quantum Highlights (15' + 5' discussion)

11:00 AM Conference Photo and Coffee Break

Presentation Session: Network Technology: How to synchronize many experimentalsSites

12:00 PM Lunch

Presentation Session: Overview and contributions from different sites and groups

5 Dielectric Haloscope at NYUAD

6 Activity in China (PKU)

Speaker: Teng Wu (PKU)

7 Levitated sensors for GW

8 QUAX

3:10 PM Coffee Break

9 Activity in Manchester

10 MAGE (UWE)

11 DALI

12 Lab Tours in Mainz

13 Mainz City Tour

7:00 PM Conference Dinner

Fri, June 27

Presentation Session: New Ideas for High Frequency Gravitational Wave Detections

14 New Ideas on Quantum Sensing

15 New Ideas for HFGW detection

11:00 AM Coffee Break

16 Towards a first GravNet Joint Data Taking

12:30 PM Lunch

17 Organisation of GravNet

2:15 PM Coffee Break

18 Discussion on ByLaws and MoUs

19 Close Out