CHEP 2024: Preface to the Proceedings

Agnieszka Dziurda, Tomasz Szumlak, Katherine V Ellis, Stephan Hageboeck,

Markus Schulz, Dorothea Vom Bruch

► To cite this version:

Agnieszka Dziurda, Tomasz Szumlak, Katherine V Ellis, Stephan Hageboeck, Markus Schulz, et al. CHEP 2024: Preface to the Proceedings. 27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024), Oct 2024, Cracovie, Poland. pp.00001, 10.1051/epj-conf/202533700001. hal-05307201

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# CHEP 2024: Preface to the Proceedings

Agnieszka Dziurda<fnref n="1" />●*, Tomasz Szumlak<fnref n="2" />●**, Katherine V. Ellis<fnref n="3" />, Stephan Hageboeck<fnref n="4" />●, Markus Schulz<fnref n="4" />, and Dorothea vom Bruch<fnref n="5" />●

**Abstract.** The 27th International Conference on Computing in High Energy and Nuclear Physics (CHEP), organized by the AGH University of Science and Technology together with the Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences and Jagiellonian University, took place in Krakow, Poland, from 19–25 October 2024. The conference attracted around 500 registered participants from 33 different countries and 166 institutions. Scientific presentations were made over the five days of the conference. Twenty longer talks have been presented in plenary sessions; 350+ shorter talks have been presented in parallel sessions; and 140+ posters have been displayed, split over four dedicated sessions.

## 1 Foreword

It is with great pleasure that we present the Proceedings for the 27th CHEP conference. The Local Organizing Committee is deeply grateful to the Program Committee, Track Conveners, and International Advisory Committee for their exceptional support and guidance throughout this journey. The enthusiasm of the CHEP community for returning to in-person meetings was evident, and we sincerely appreciate the dedication and effort reflected in the conference presentations and these Proceedings. With approximately 500 participants, over 350 oral presentations, and more than 140 posters, CHEP 2024 was a resounding success for the High-Energy Physics community. We are thrilled to have hosted the CHEP community in Krakow, Poland, and we eagerly look forward to reconnecting at the next conference in Bangkok, Thailand, on May 25–29, 2026.

## 2 CHEP Conference Series

The CHEP conferences focus on computing, networking, and software challenges faced by the world's leading data-intensive science experiments, which analyse hundreds of petabytes of data using global computing resources. They serve as a unique forum where computing experts from Particle and Nuclear Physics come together to exchange knowledge and insights.

Since its inception in 1985, CHEP has been held approximately every 18 months. Table 1 provides a list of past conferences along with available URLs.

<footnote n="1">¹Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland</footnote>

<footnote n="2">²AGH University of Science and Technology, Kraków, Poland</footnote>

<footnote n="3">³Science and Technology Facilities Council STFC, Didcot, United Kingdom</footnote>

<footnote n="4">⁴European Organization for Nuclear Research (CERN), Geneva, Switzerland</footnote>

<footnote n="5">⁵Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France</footnote>

<footnote>*e-mail: agnieszka.dziura@cern.ch</footnote>

<footnote>**e-mail: szumlak@agh.edu.pl</footnote>
<table><caption>**Table 1.** Dates and Locations of previous CHEP conferences.</caption><thead><tr><td>Name</td><td>Dates</td><td>Location</td></tr></thead><tbody><tr><td>CHEP'85</td><td>25–28 June 1985</td><td>Amsterdam, Netherlands</td></tr><tr><td>CHEP'87</td><td>2–6 February 1987</td><td>Asilomar, California, USA</td></tr><tr><td>CHEP'89</td><td>10–14 April 1989</td><td>Oxford, England, United Kingdom</td></tr><tr><td>CHEP'90</td><td>9–13 April 1990</td><td>Santa Fe, New Mexico, USA</td></tr><tr><td>CHEP'91</td><td>11–15 March 1991</td><td>Tsukuba, Japan</td></tr><tr><td>CHEP'92</td><td>21–25 September 1992</td><td>Annecy, France</td></tr><tr><td>CHEP'94</td><td>21–27 April 1994</td><td>San Francisco, California, USA</td></tr><tr><td>CHEP'95</td><td>18–22 September 1995</td><td>Rio de Janeiro, Brazil</td></tr><tr><td>CHEP'97</td><td>7–11 April 1997</td><td>Berlin, Germany</td></tr><tr><td>CHEP'98</td><td>31 August–4 September 1998</td><td>Chicago, Illinois, United States</td></tr><tr><td>CHEP'2000</td><td>7–11 February 2000</td><td>Padova, Italy</td></tr><tr><td>CHEP'01</td><td>3–7 September 2001</td><td>Beijing, China</td></tr><tr><td>CHEP'03</td><td>24–28 March 2003</td><td>San Diego, California, USA</td></tr><tr><td>CHEP'04</td><td>27 September–1 October 2004</td><td>Interlaken, Switzerland</td></tr><tr><td>CHEP'06</td><td>13–17 February 2006</td><td>Mumbai, India</td></tr><tr><td>CHEP'07</td><td>2–7 September 2007</td><td>Victoria, British Columbia, Canada</td></tr><tr><td>CHEP'09</td><td>21–27 March 2009</td><td>Prague, Czech Republic</td></tr><tr><td>CHEP'10</td><td>18–22 October 2010</td><td>Taipei, Taiwan</td></tr><tr><td>CHEP'12</td><td>21–25 May 2012</td><td>New York, New York, USA</td></tr><tr><td>CHEP'13</td><td>14–18 October 2013</td><td>Amsterdam, Netherlands</td></tr><tr><td>CHEP'15</td><td>13–17 April 2015</td><td>Okinawa, Japan</td></tr><tr><td>CHEP'16</td><td>10–14 October 2016</td><td>San Francisco, California, USA</td></tr><tr><td>CHEP'18</td><td>9–13 July 2018</td><td>Sofia, Bulgaria</td></tr><tr><td>CHEP'19</td><td>4–8 November 2019</td><td>Adelaide, Australia</td></tr><tr><td>vCHEP'21</td><td>17–21 May 2021</td><td>Virtual event hosted by CERN</td></tr><tr><td>CHEP'23</td><td>5–11 May 2023</td><td>Norfolk, Virginia</td></tr></tbody></table>

## 3 CHEP 2024 Conference

The CHEP 2024 conference was hosted by AGH University of Science and Technology (AGH) together with the Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences (IFJ PAN) and Jagiellonian University (UJ) and held at the Auditorium Maximum in Kraków, Poland. Running from 19–25 October 2024, the conference hosted roughly 500 attendees from 33 different countries. On the weekend before the main conference, October 19-20, the HEP Software Foundation Training took place as the Pre-CHEP Workshop. The focus of the CHEP conference continually adapts to emerging technologies and major scientific initiatives. Plenary sessions feature a diverse range of scientific and computing topics, fostering an engaging and insightful program for the community.

### 3.1 Program Details

The scientific program for CHEP'24 featured engaging morning plenary sessions throughout the week, nine parallel session tracks, and a thought-provoking panel discussion on disruptive computing technologies such as Quantum Computing and LLMs: “Will They Bring Disruptive Changes to HEP Computing?” A public lecture was hosted to introduce High-Energy Physics computing challenges to the local audience.

The plenary sessions featured 21 invited long talks, while the parallel sessions (Table 2) hosted more than 350 short talks, sparking lively discussions on the technical merits of various approaches. Additionally, more than 140 posters were showcased across four dedicated
<figure><img src="image_2.png" /><figcaption>**Figure 1.** Photo of Conference attendees taken at CHEP’24 in Krakow, Poland.</figcaption></figure>

poster sessions. The conference concluded with a series of Track Summary presentations and the exciting announcement that CHEP 2026 will take place in Bangkok, Thailand, from May 25–29, 2026.

The CHEP’24 Conference site contains a record of the presentations, posters, and photos.

## 3.2 Organization

The CHEP conference is organized through a structured framework consisting of three key committees. The Program Committee (PC) which oversees the scientific content of the program. The International Advisory Committee provides valuable expertise and guidance to support the conference chairs. The Local Organizing Committee, which supports the PC in program development and manages local arrangements, including lodging, transportation, social events, and logistical aspects such as registration, scheduling, venue selection, and conference proceedings.

### 3.2.1 Program Committee

The Program Committee chairs (Table 3) play a pivotal role in the successful execution of a CHEP conference. Their responsibilities include:

* Defining the scientific structure of parallel sessions, guided by input from the International Advisory Committee and the local conference chairs. Collaborating with them to shape the overall conference structure, including plenary sessions and speaker selection.

* Proposing additional PC members to assist with abstract selection and the organization of parallel sessions.
<table><caption>**Table 2. Parallel Session Tracks.**</caption><thead><tr><td>Track</td><td>Description / Keywords</td></tr></thead><tbody><tr><td>Track 1: Data and Metadata Organization, Management and Access</td><td>Storage management frameworks; data access protocols; object, metadata and event store systems; content delivery and caching; data analytics; FAIR data principles; non-event data; data classification (including ML); online and offline databases; exabyte-scale datasets.</td></tr><tr><td>Track 2: Online and real-time computing</td><td>Data acquisition; triggers; streaming and trigger-less data acquisition; online calibration/reconstruction; real-time analysis; event building; configuration and access controls; detector control systems; real-time analytics and monitoring; trigger techniques and algorithms; hardware trigger algorithms; ML for triggers or outlier detection; accelerators and hybrid computing for online computing.</td></tr><tr><td>Track 3: Offline Computing</td><td>Offline reconstruction; detector calibration; detector geometries; data quality systems; data preparation; physics performance; compute accelerators and hybrid computing for offline; ML for offline computing/calibration/outlier detection; quantum algorithms and general quantum computing technologies.</td></tr><tr><td>Track 4: Distributed Computing</td><td>Grid middleware; monitoring and accounting frameworks; security models and tools; distributed workload management; federated authentication and authorisation infrastructures; middleware databases; software distribution and containers; heterogeneous resource brokerage.</td></tr><tr><td>Track 5: Simulation and analysis tools</td><td>Object identification; object calibration; analysis workflows; software for end-user analysis; ML in analysis workflows; lattice QCD; theory calculations; MC event generation; detector simulation; fast simulation (classic and ML); quantum simulation and algorithms.</td></tr><tr><td>Track 6: Collaborative software and maintainability</td><td>Collaborative software; sustainable software; software management, continuous integration; software building; testing and quality assurance; software distribution; programming techniques and tools; integration of external toolkits; Manuals and documentation; ML for documentation, LLMs.</td></tr><tr><td>Track 7: Computing Infrastructure</td><td>Opportunistic resources, orchestration of virtual machines and containers; cloud; HPC and exascale; networking; computing centre infrastructure; energy efficiency; cost of computing; management and monitoring; quantum networks.</td></tr><tr><td>Track 8: Collaboration, Interpretation, Outreach and Education</td><td>Collaborative tools; reinterpretation tools; analysis preservation and reuse; data preservation for collaboration; outreach activities; open data for education and training; training initiatives; event displays.</td></tr><tr><td>Track 9: Analysis facilities and interactive computing</td><td>Frameworks; infrastructure for interactive computing; applications and use-cases; experience with AF production systems and pilots; aspects of reproducibility in interactive computing.</td></tr></tbody></table>

* Overseeing the review and selection of abstracts, ensuring consistent standards of quality and relevance.

* Developing a track structure for selected talks and organizing sessions for accepted posters.

* Appointing Track Conveners.

* Managing the submission and review process for papers, appointing referees, monitoring the review system's use by Track Conveners, encouraging necessary revisions, and ensuring timely completion of peer reviews.

### 3.2.2 Track Conveners

The Track Conveners assist the Program Committee chairs by reviewing submissions before the conference, hosting parallel sessions during the event, and playing a crucial editorial role
<table><caption>**Table 3.** Program Committee Co-Chairs</caption><thead><tr><td>Name</td><td>Affiliation</td></tr></thead><tbody><tr><td>Katherine V. Ellis</td><td>Science and Technology Facilities Council (STFC)</td></tr><tr><td>Stephan Hageboeck</td><td>European Organization for Nuclear Research (CERN)</td></tr><tr><td>Markus Schulz</td><td>European Organization for Nuclear Research (CERN)</td></tr><tr><td>Dorothea vom Bruch</td><td>Aix Marseille Univ, CNRS/IN2P3, CPPM</td></tr></tbody></table>

in shaping these Proceedings afterwards. The list of Track Convenors is collected in Table 4.

<table><caption>**Table 4.** Track Conveners</caption><thead><tr><td>Name</td><td>Affiliation</td><td>Name</td><td>Affiliation</td></tr></thead><tbody><tr><td>Christina Agapopoulou</td><td>IJCLAB</td><td>Marilena Bandieramonte</td><td>Univ. of Pittsburgh</td></tr><tr><td>Marco Battaglieri</td><td>INFN-GENOVA</td><td>Daniela Bauer</td><td>Imperial College</td></tr><tr><td>Jake Bennett</td><td>Univ. of Mississippi</td><td>Lene K. Bryngemark</td><td>LU</td></tr><tr><td>Laura Cappelli</td><td>INFN Ferrara</td><td>James Catmore</td><td>Univ. of Oslo</td></tr><tr><td>Marta Czurylo</td><td>CERN</td><td>Giacomo De Pietro</td><td>KIT</td></tr><tr><td>Wouter Deconinck</td><td>Univ. of Manitoba</td><td>Matthew Feickert</td><td>Wisconsin</td></tr><tr><td>Tobias Fitschen</td><td>Univ. of Manchester</td><td>Henryk Giemza</td><td>NCBJ Warsaw</td></tr><tr><td>Nathan Grieser</td><td>Univ. of Cincinnati</td><td>Giovanni Guerrieri</td><td>CERN</td></tr><tr><td>Fabio Hernandez</td><td>CC-IN2P3/CNRS</td><td>Bruno Heinrich</td><td>Hoeft, KIT</td></tr><tr><td>Charis Kleio Koraka</td><td>Univ. of Wisconsin</td><td>Ruslan Mashinistov</td><td>BNL</td></tr><tr><td>Rosen Matev</td><td>CERN</td><td>Tigran Mkrtchyan</td><td>DESY</td></tr><tr><td>Lucia Morganti</td><td>INFN-CNAF</td><td>Kunihiro Nagano</td><td>KEK</td></tr><tr><td>Panos Paparrigopoulos</td><td>CERN</td><td>Flavio Pisani</td><td>CERN</td></tr><tr><td>Jonas Rembser</td><td>CERN</td><td>David Rohr</td><td>CERN</td></tr><tr><td>Enric Tejedor Saavedra</td><td>CERN</td><td>Gianfranco Sciacca</td><td>Univ. Bern</td></tr><tr><td>Nicole Skidmore</td><td>Univ. of Warwick</td><td>Sam Skipsey</td><td>Univ. of Glasgow</td></tr><tr><td>Nicolas Smith</td><td>FNAL</td><td>Tobias Stockmanns</td><td>FZJ (Julich)</td></tr><tr><td>Davide Valsecchi</td><td>ETH</td><td>Christoph Wissing</td><td>DESY</td></tr></tbody></table>

### 3.2.3 International Advisory Committee

The International Advisory Committee is a distinguished group of experts with experience from previous CHEP conferences. Their role is to provide valuable guidance to both the Program Committee and the Local Organizing Committee. The composition of the International Advisory Committee is shown in Table 5.

### 3.2.4 Local Organization Committee

The CHEP 2024 conference was chaired by Agnieszka Dziurda and Tomasz Szumlak. The chairs would like to thank the Local Organizing Committee (Table 6). The chairs would like to express their heartfelt gratitude to the Local Organizing Committee for their incredible effort in making this conference a success. Organizing an event of this scale is no small task, and your dedication, hard work, and attention to detail have truly made a difference. From the seamless logistics to the warm hospitality, engaging sessions, and smooth coordination, everything was exceptionally well-prepared. The chairs would like to thank also the Technical
<table><caption>**Table 5.** International Advisory Committee</caption><thead><tr><td>Name</td><td>Affiliation</td><td>Name</td><td>Affiliation</td></tr></thead><tbody><tr><td>Sang Un Ahn</td><td>KISTI</td><td>Mohammad Al-Turany</td><td>GSI</td></tr><tr><td>Julia Andreeva</td><td>CERN</td><td>Latchezar Betev</td><td>CERN</td></tr><tr><td>Ian Bird</td><td>CERN</td><td>Catherine Biscarat</td><td>L2IT (CNRS/IN2P3, UT3)</td></tr><tr><td>Tommaso Boccali</td><td>INFN Pisa</td><td>Amber Boehnlein</td><td>JLab</td></tr><tr><td>Concezio Bozzi</td><td>INFN Ferrara</td><td>David Britton</td><td>Glasgow</td></tr><tr><td>Simone Campana</td><td>CERN</td><td>Marco Cattaneo</td><td>CERN</td></tr><tr><td>Gang Chen</td><td>IHEP</td><td>Peter Clarke</td><td>Edinburgh</td></tr><tr><td>Caterina Doglioni</td><td>Univ. of Manchester</td><td>Peter Elmer</td><td>Princeton Univ.</td></tr><tr><td>Xavier Espinal</td><td>CERN</td><td>Alessandra Forti</td><td>Manchester</td></tr><tr><td>Patrick Fuhrmann</td><td>DESY</td><td>Gerardo Ganis</td><td>CERN</td></tr><tr><td>Maria Girone</td><td>CERN</td><td>Vladimir V. Gligorov</td><td>LPHNE and IN2P3/CNRS</td></tr><tr><td>Heather Gray</td><td>UC Berkeley/LBNL</td><td>David Groep</td><td>Nikhef</td></tr><tr><td>Takanori Hara</td><td>KEK</td><td>Benedict Hegner</td><td>CERN</td></tr><tr><td>Peter Hristov</td><td>CERN</td><td>Paul Jackson</td><td>Univ. of Adelaide</td></tr><tr><td>Michel Jouvin</td><td>IJCLab (CNRS/IN2P3)</td><td>Jerome Lauret</td><td>BNL</td></tr><tr><td>Paul Laycock</td><td>BNL</td><td>Pere Mato</td><td>CERN</td></tr><tr><td>Gonzalo Merino</td><td>PIC/CIEMAT</td><td>Niko Neufeld</td><td>CERN</td></tr><tr><td>Stefano Piano</td><td>INFN sez. Trieste</td><td>Danilo Piparo</td><td>CERN</td></tr><tr><td>Ghita Rahal</td><td>IN2P3/CNRS</td><td>Stefan Roiser</td><td>CERN</td></tr><tr><td>Chiara Ilaria Rovelli</td><td>INFN Rome</td><td>Elizabeth Sexton-Kennedy</td><td>FNAL</td></tr><tr><td>Oksana Shadura</td><td>Univ. of Nebraska-Lincoln</td><td>Lucia Silvestris</td><td>INFN Bari</td></tr><tr><td>Oxana Smirnova</td><td>Lund</td><td>Randall Sobie</td><td>Victoria</td></tr><tr><td>Graeme A. Stewart</td><td>CERN</td><td>Brad Sawatzky</td><td>JLab</td></tr><tr><td>Reda Tafirout</td><td>TRIUMF</td><td>Ikuo Ueda</td><td>KEK</td></tr><tr><td>Raffaella De Vita</td><td>INFN</td><td>Gordon Watts</td><td>Univ. of Washington</td></tr><tr><td>Torre Wenaus</td><td>BNL</td><td>Eric Yen</td><td>Academia Sinica</td></tr></tbody></table>

and Logistic Support team (Table 7) for ensuring everything ran smoothly! Your hard work behind the scenes made a huge difference in making this event a success. The chairs truly appreciate the dedication and efficiency of the Technical and Logistic Support team.

<table><caption>**Table 6.** Local Organizing Committee</caption><thead><tr><td>Name</td><td>Affiliation</td></tr></thead><tbody><tr><td>Agnieszka Dziurda (Co-chair)</td><td>IFJ PAN</td></tr><tr><td>Tomasz Szumlak (Co-chair)</td><td>AGH</td></tr><tr><td>Bartosz Baliś</td><td>AGH</td></tr><tr><td>Tomasz Bold</td><td>AGH</td></tr><tr><td>Dominik Derendarz</td><td>IFJ PAN</td></tr><tr><td>Grzegorz Korcyl</td><td>UJ</td></tr><tr><td>Bartosz Mindur</td><td>AGH</td></tr><tr><td>Agnieszka Obłąkowska-Mucha</td><td>AGH</td></tr><tr><td>Bartłomiej Rachwał</td><td>AGH</td></tr><tr><td>Piotr Salabura</td><td>UJ</td></tr></tbody></table>

## 4 Sponsors

Primary support for the CHEP 2024 conference was provided by AGH University of Science and Technology, the Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences and Jagiellonian University. Additional support was provided by the EGI Foun-
<table><caption>**Table 7.** Technical and logistic support</caption><thead><tr><td>Name</td><td>Affiliation</td></tr></thead><tbody><tr><td>Anna Inglot</td><td></td></tr><tr><td>Maciej Giza</td><td>IFJ</td></tr><tr><td>Wojciech Gomułka</td><td>AGH</td></tr><tr><td>Jakub Hajduga</td><td>AGH</td></tr><tr><td>Sabin Hashmi</td><td>AGH</td></tr><tr><td>Stefan Horodeński</td><td>AGH</td></tr><tr><td>Kamila Kalecińska</td><td>AGH</td></tr><tr><td>Piotr Libucha</td><td>AGH</td></tr><tr><td>Krzysztof Prościński</td><td>UJ</td></tr><tr><td>Anna Władyszewska</td><td>UJ</td></tr></tbody></table>

dation with the two coordinated projects interTwin and SPECTRUM, Krakow City, and LOT - Polish Airlines.

<figure><img src="image_3.png" /><figcaption>**Figure 2.** Sponsors for CHEP’24.</figcaption></figure>