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

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

1 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)

2 Discussion: Overview and Recommendations of the Snowmass UHECR white paper

Speaker: Fred Sarazin

UHECR_WP_GCOS.pdf

10:00 coffee

3 Discussion: Particle physics in the context of GCOS

Speaker: Dennis Soldin

GCOS_dsoldin.pdf

11:00 coffee

4 Discussion: Astrophysics in the context of GCOS

Speaker: Michael Unger

science.pdf

12:00 lunch

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

14:30 coffee

Expert Round: Science Case

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

audio1885940047.m4a

video1885940047.mp4

6 Introduction

Speaker: Rafael Alves Batista (Radboud University)

7 SBG origin of UHECRs with GCOS

Speaker: Ana Müller

GCOS_MuellerAna.pdf

8 (E)GMF with GCOS

Speaker: Arjen van Vliet (DESY Zeuthen)

VanVliet_GCOSandMagneticFields.pdf

9 How isotropic can the UHECR sky *really* be?

Speaker: Armando di Matteo (INFN Torino)

slides.pdf

10 Measuring the hair of the UHECR energy spectrum with GCOS

Speaker: Glennys Farrar

GCOS_071322.pdf

11 GCOS, SHDM and UV physics

Speaker: Luis Anchordoqui

GCOS.pdf

12 Soruce constraints from \nu and p with GCOS

Speaker: Marco Muzio (New York University)

GCOSWorkshop_Jul22.pdf

13 Chasing UHE Photons with GCOS

Speaker: Markus Risse

gcos_20220713.pdf

14 Fits of flux, composition and arrival directions with GCOS statistics

Speaker: Teresa Bister

GCOS_July_2022.pdf

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

15 Introduction

Speakers: Michael Unger, Toshihiro Fujii (Kyoto University)

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

Speaker: Bruce Dawson

GCOS_Dawson_AugerFDHistory.pdf

17 Design Considerations for TA FD

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

flashTAFD.pdf

18 Does GCOS need an FD?

Speaker: All

19 Cyclops Design for GCOS FD

Speaker: Michael Unger

fd.pdf

20 Low-Cost FD Array for GCOS

Speaker: Toshihiro Fujii (Kyoto University)

220713_FAST4GCOS.pdf

21 Ideas for FD Optimization

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

salamida.pdf

22 Discussion

Speaker: All

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

23 Location (exposure)

Speaker: Armando di Matteo (INFN Torino)

slides.pdf

24 Location (magnetic field)

Speaker: Pierre Billoir (LPNHE)

magnetic_distortion.pdf

25 Discussions

26 Array confirgurations

Speaker: Alan Watson

Watson_GCOS_ropt.pdf

27 Squre vs triangular array

Speaker: Roth Markus (KIT)

28 Discussions

Expert Round: RD Design

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

29 remarks on radio detection

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

30 remarks on radio detection and gamma rays

Speaker: Julian Rautenberg (University of Wuppertal)

RD_flash.pdf

31 considerations for array configurations, including neutrinos

Speaker: Washington Carvalho Jr

32 a quick array simulator

Speaker: Tomas Fodran (Radboud University)

19:00 dinner

Thursday, 14 July

33 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 lunch

34 Discussions editing document

14:30 coffee

Expert Round: Science Case

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

audio1885940047.m4a

video1885940047.mp4

35 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

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

36 Snake Array

Speaker: Pierre Sokolsky

snake-2.pdf

37 Fluorescence yield with sFLASH

Speaker: Masaki Fukushima

sFLASH_220714_fukushima.pdf

38 The algorithm for the FAST reconstruction and its performance

Speaker: Jose Bellido

FAST_Event_Reconstruction.pdf

39 CRAFFT concept and design

Speaker: Yuichiro Tameda

gcos_20220714_crafft_tameda.pdf

40 Neutrino Searches with GCOS FD

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

41 Discussion

Speaker: All

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

42 Mass resolution with SSD + WCD

Speaker: Eric Mayotte (University of Wuppertal)

For_GCOS_SD_Consideration.pdf

43 TA surface detector

Speaker: Nonaka Toshiyuki

44 Impact of relative positions of sub-detectors

Speaker: Schmidt David

45 Ideal SD detector

Speaker: Pierre Billoir

46 Segmented tank and spacing

Speaker: Ioana Maris (Université Libre de Bruxelles)

IoanaMaris_Segmented_v2.pdf

47 Synergies with SWGO

Speaker: Jose Bellido

48 Discussions

Expert Round: RD Design

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

19:00 dinner

Friday, 15 July

49 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 lunch

50 Next steps, towards building prototypes, working groups, funding opportunities for prototypes, synergies with other initiatives

17:00 End of workshop