Ptolemy International Workshop 1 -2 July 2025

1 Jul 2025, 09:30 → 2 Jul 2025, 18:15 Europe/Amsterdam

The Ptolemy meeting of 2025 will take place in Nijmegen on July 1 - 2 at "De Lindenberg".

In the evening of July 1th we will have a tour at bear brewery "De Hemel"  followed by a conference dinner at restaurant de Hemel

Registration is open, deadline 12 Jun 2025

Zoom link

Tuesday 1 July

Day 1 morning

Convener: Prof. Nicolo deGroot (RU)

1 Welcome and Logistics

Speaker: Prof. Nicolo deGroot (RU)

Ptolemy_Nijmegen_Intro.pdf

2 General PTOLEMY talk

Speaker: Prof. Nicolo deGroot (RU)

Nijmegen-Ptolemy-2025.pptx

3 Neutrinos and the CNB

Speaker: Guillermo Franco Abellán (University of Amsterdam)

10:30 Coffee Break

4 Relic neutrino phenomenology

Speaker: Ruben Bartlet (Radboud University)

PPTX van Slides Final 01-07 (2).pptx

5 Overview of the theory of T-C bound state

Speaker: A. Esposito (INFN Roma & Sapienza)

6 Perspectives on graphene based materials for PTOLEMY

Speaker: V. Tozzini (INFN & Istituto Nanoscienze-CNR Pisa)

WorkshopPtol_nij2025.pdf

7 Graphene activities in Nijmegen

Speaker: Inge van Rens (High Energy Physics)

2507-Ptolemy.pptx

13:00 Lunch

Day 1 afternoon

8 Report on TES results and prospectives

Speaker: F. Malnati (INFN & INRiM Torino)

Ptolemy_Nimega_Malnati.pdf

9 Next steps of electron detection with TESs

Speaker: B. Corcione (INFN Roma & Sapienza)

nimega_corcione_new.pdf

10 Introduction to the GREEAT project and preliminary results of the transmission of electron through graphene up to 5 keV

Speaker: A. Apponi M. Chirico (INFN and Roma Tre)

ptolemy_meeting_chirico.pdf

PtolemyNijmegen_AA.pdf

11 Report on RF measurement from LNGS

Speaker: F. Virzi (LNGS)

nimega_meeting.pdf

16:00 Tea Break

12 Overview of PTOLEMY Critical Elements

Speaker: Chris Tully (Princeton)

Overview of PTOLEMY Critical Elements

PTOLEMY_Critical_Elements_Nijmegen_Tully_compress.pdf

13 IB meeting: Preparation to detector assembly and run. Tasks distribution

Speaker: Gianluca Cavoto (INFN Roma & Sapienza)

LOI2025-12.pdf

Visit brewery "De Hemel" and social dinner

Wednesday 2 July

Day 2 morning

Convener: A.P. Colijn (UvA/Nikhef)

14 1ug Tritium Configuration and Transmission for LNGS Demonstrator

Speaker: W. Chung (Princeton)

lngs_1ug.pptx

15 Studies injection of electrons into e-trap at LNGS

Speaker: F. Pofi (LNGS)

Nijmegen_Pofi.pdf

16 Slowing Moving ExB electrons and Filter Demonstrator

Speaker: M. Farino (Princeton)

PTOLEMY_Nijmegen_Farino.pdf

10:30 Coffee Break

17 Filter Phase Space Evolution and Interface to Sensor

Speaker: W. Chung (Princeton)

lngs_filter_sensor_interface.pdf

18 Depth Profile of the Hydrogenation of Multi Walls Carbon Nanotubes with Soft-to-Hard X-ray Photoemission Spectroscopy

Speaker: O. Castellano (INFN & Roma Tre)

Ptolemy Nimega presentation.pdf

19 Report on graphene loading lab setup in UK

Speaker: Gianluca Cavoto (INFN Roma & Sapienza)

Tritium on Gr July 2025.pdf

20 Report on analogic and digital electronics development at Nikhef

Speaker: M. Naafs

updateCollaborationMeeting_July2025_V2.pptx

13:00 Lunch

Day 2 afternoon

Convener: Gianluca Cavoto (INFN Roma & Sapienza)

21 Sensitivity studies

Speaker: L. Perna (GSSI)

Evaluation of PTOLEMY sensitivity.pptx

22 HV paper

Speaker: N. Rossi (LNGS)

23 Systematics

Speaker: M. Messina (LNGS)

24 Report on Magnet construction and Vacuum chamber

Speaker: M. Messina (LNGS)

25 Report on lab preparation

Speaker: M. Messina (LNGS)

26 Analysis of Field Homogeneity and Magnetic Measurement Points in the PTOLEMY Superconducting Magnet

Speaker: G. Neri

Nijmegen homogeneity magnet.pdf

16:00 Tea Break

27 Report on Lorentz4

Speaker: N. Rossi (LNGS)

nrossi_lorentz4_nijmegen.pdf

28 General discussion on time schedule and requirements for the demonstrator commissioning

29 Departure