GCOS workshop 2022 Wuppertal

13 Jul 2022, 08:00 → 15 Jul 2022, 18:00 Europe/Berlin

Ioana Maris (Université Libre de Bruxelles), Julian Rautenberg (University of Wuppertal), Jörg Hörandel (Radboud University Nijmegen dep. Astrophysics), Michael Unger, email email

Aim of the workshop is to further advance our plannings towards the Global Cosmic Ray Observatory - GCOS. One of the main objectives will be to develop astrophysical science case scenarios and to agree on a few straw man designs, which can be used for simulations in order to concretize the expected performance of GCOS for key performance indicators.

The results of the workshop will be written up in a document
GCOS workshop 2022
concepts and ideas for the science case and a straw man design
as a reference for the further development of GCOS.

The workshop will be hosted at the University of Wuppertal in Germany. Remote connection via zoom will be provided. For an efficient discussion we encourage key people to be present on site.

Organizers:
Rafael Alves Batista, Antonella Castellina, Ralph Engel, Toshihiro Fujii, Jörg Hörandel, Karl-Heinz Kampert, Lu Lu, Ioana Maris, Shoichi Ogio, Julian Rautenberg, Takashi Sako, Fred Sarazin, Michael Unger

WSW-Fahrplan-Bus-Linie-603.pdf

Wednesday, 13 July

09:00 → 09:15 Opening and scope of workshop

—> develop straw man design(s) for detectors and arrays to be used for (more) detailed performance studies (resolution for energy, mass, direction)

Speakers: Julian Rautenberg, Jörg Hörandel (Radboud University Nijmegen dep. Astrophysics)

09:15 → 10:00 Discussion: Overview and Recommendations of the Snowmass UHECR white paper

Speaker: Fred Sarazin

UHECR_WP_GCOS.pdf

10:00 → 10:15 coffee

10:15 → 11:00 Discussion: Particle physics in the context of GCOS

Speaker: Dennis Soldin

GCOS_dsoldin.pdf

11:00 → 11:15 coffee

11:15 → 12:00 Discussion: Astrophysics in the context of GCOS

Speaker: Michael Unger

science.pdf

12:00 → 13:30 lunch

13:30 → 14:30 Define concrete goal of workshop, define key questions/key performance indicators what detector do we need to achieve the science goal(s)?

14:30 → 15:00 coffee

15:00 → 15:55 Expert Round: Science Case

Conveners: Dennis Soldin, Michael Unger, Rafael Alves Batista (Radboud University)

audio1885940047.m4a

video1885940047.mp4

15:00 Introduction

Speaker: Rafael Alves Batista (Radboud University)

15:01 SBG origin of UHECRs with GCOS

Speaker: Ana Müller

GCOS_MuellerAna.pdf

15:08 (E)GMF with GCOS

Speaker: Arjen van Vliet (DESY Zeuthen)

VanVliet_GCOSandMagneticFields.pdf

15:15 How isotropic can the UHECR sky *really* be?

Speaker: Armando di Matteo (INFN Torino)

slides.pdf

15:22 Measuring the hair of the UHECR energy spectrum with GCOS

Speaker: Glennys Farrar

GCOS_071322.pdf

15:29 GCOS, SHDM and UV physics

Speaker: Luis Anchordoqui

GCOS.pdf

15:36 Soruce constraints from \nu and p with GCOS

Speaker: Marco Muzio (New York University)

GCOSWorkshop_Jul22.pdf

15:43 Chasing UHE Photons with GCOS

Speaker: Markus Risse

gcos_20220713.pdf

15:50 Fits of flux, composition and arrival directions with GCOS statistics

Speaker: Teresa Bister

GCOS_July_2022.pdf

16:00 → 16:55 Expert Round: FD Design

The audio and (largly corrupted) video is included in the previous session material.

Conveners: Michael Unger, Toshihiro Fujii (Kyoto University)

audio2885940047.m4a

video3885940047.mp4

16:00 Introduction

Speakers: Michael Unger, Toshihiro Fujii (Kyoto University)

16:01 Cyclops vs. Superman: Design Considerations for Auger South FD

Speaker: Bruce Dawson

GCOS_Dawson_AugerFDHistory.pdf

16:07 Design Considerations for TA FD

Speaker: Shoichi Ogio (Institute for Cosmic Ray Research, The University of Tokyo)

flashTAFD.pdf

16:13 Does GCOS need an FD?

Speaker: All

16:25 Cyclops Design for GCOS FD

Speaker: Michael Unger

fd.pdf

16:31 Low-Cost FD Array for GCOS

Speaker: Toshihiro Fujii (Kyoto University)

220713_FAST4GCOS.pdf

16:37 Ideas for FD Optimization

Speaker: Francesco Salamida (University of L'Aquila and INFN LNGS)

salamida.pdf

16:43 Discussion

Speaker: All

17:00 → 18:00 Expert Round: SD Design

The audio and (largely corrupted) video is included in the discussion session material

Conveners: Fred Sarazin, Ioana Maris (Université Libre de Bruxelles)

audio3885940047.m4a

video3885940047.mp4

17:00 Location (exposure)

Speaker: Armando di Matteo (INFN Torino)

slides.pdf

17:05 Location (magnetic field)

Speaker: Pierre Billoir (LPNHE)

magnetic_distortion.pdf

17:10 Discussions

17:20 Array confirgurations

Speaker: Alan Watson

Watson_GCOS_ropt.pdf

17:25 Squre vs triangular array

Speaker: Roth Markus (KIT)

17:35 Discussions

18:00 → 18:55 Expert Round: RD Design

Conveners: Julian Rautenberg, Jörg Hörandel (Radboud University Nijmegen dep. Astrophysics)

18:00 remarks on radio detection

Speaker: Jörg Hörandel (Radboud University Nijmegen dep. Astrophysics)

18:05 remarks on radio detection and gamma rays

Speaker: Julian Rautenberg (University of Wuppertal)

RD_flash.pdf

18:10 considerations for array configurations, including neutrinos

Speaker: Washington Carvalho Jr

18:15 a quick array simulator

Speaker: Tomas Fodran (Radboud University)

19:00 → 21:00 dinner

Thursday, 14 July

09:00 → 12:00 Brainstorming and blackboard discussions to prepare afternoon expert rounds and to set up structure of the workshop document

• science case(s)

• straw man designs
• begin writing document

Speaker: all

12:00 → 13:30 lunch

13:30 → 14:30 Discussions editing document

14:30 → 15:00 coffee

15:00 → 15:55 Expert Round: Science Case

Conveners: Dennis Soldin, Michael Unger, Rafael Alves Batista (Radboud University)

audio1885940047.m4a

video1885940047.mp4

15:00 Science Case Panel Discussion

Audio material contains following session as well.
Video was largly corrupted, most probably due to network outages.

Speaker: All

audio1891698544.m4a

video1891698544.mp4

16:00 → 16:55 Expert Round: FD Design

The audio and (largly corrupted) video is included in the previous session material.

Conveners: Michael Unger, Toshihiro Fujii (Kyoto University)

audio2885940047.m4a

video3885940047.mp4

16:00 Snake Array

Speaker: Pierre Sokolsky

snake-2.pdf

16:05 Fluorescence yield with sFLASH

Speaker: Masaki Fukushima

sFLASH_220714_fukushima.pdf

16:10 The algorithm for the FAST reconstruction and its performance

Speaker: Jose Bellido

FAST_Event_Reconstruction.pdf

16:15 CRAFFT concept and design

Speaker: Yuichiro Tameda

gcos_20220714_crafft_tameda.pdf

16:20 Neutrino Searches with GCOS FD

Speaker: Francesco Salamida (University of L'Aquila and INFN LNGS)

16:25 Discussion

Speaker: All

17:00 → 18:00 Expert Round: SD Design

The audio and (largely corrupted) video is included in the discussion session material

Conveners: Fred Sarazin, Ioana Maris (Université Libre de Bruxelles)

audio3885940047.m4a

video3885940047.mp4

17:00 Mass resolution with SSD + WCD

Speaker: Eric Mayotte (University of Wuppertal)

For_GCOS_SD_Consideration.pdf

17:05 TA surface detector

Speaker: Nonaka Toshiyuki

17:10 Impact of relative positions of sub-detectors

Speaker: Schmidt David

17:15 Ideal SD detector

Speaker: Pierre Billoir

17:20 Segmented tank and spacing

Speaker: Ioana Maris (Université Libre de Bruxelles)

IoanaMaris_Segmented_v2.pdf

17:25 Synergies with SWGO

Speaker: Jose Bellido

17:30 Discussions

18:00 → 18:55 Expert Round: RD Design

Conveners: Julian Rautenberg, Jörg Hörandel (Radboud University Nijmegen dep. Astrophysics)

19:00 → 21:00 dinner

Friday, 15 July

09:00 → 12:00 Brainstorming and blackboard discussions to converge on document: GCOS workshop 2022 - concepts and ideas for the science case and a straw man design

12:00 → 13:30 lunch

13:30 → 16:30 Next steps, towards building prototypes, working groups, funding opportunities for prototypes, synergies with other initiatives

17:00 → 17:10 End of workshop