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A Disk-based Archival Storage System Using the EOS Erasure Coding Implementation for the ALICE Experiment at the CERN LHC
/ Ahn, Sang Un (KISTI, Daejeon) ; Betev, Latchezar (CERN) ; Bonfillou, Eric (CERN) ; Han, Heejune (KISTI, Daejeon) ; Kim, Jeongheon (KISTI, Daejeon) ; Lee, Seung Hee ; Panzer-Steindel, Bernd (CERN) ; Peters, Andreas Joachim (CERN) ; Yoon, Heejun (KISTI, Daejeon)
Korea Institute of Science and Technology Information (KISTI) is a Worldwide LHC Computing Grid (WLCG) Tier-1 center mandated to preserve raw data produced from A Large Ion Collider Experiment (ALICE) experiment using the world’s largest particle accelerator, the Large Hadron Collider (LHC) at European Organization for Nuclear Research (CERN). Physical medium used widely for long-term data preservation is tape, thanks to its reliability and least price per capacity compared to other media such as optical disk, hard disk, and solid-state disk. [...]
2022 - 10 p.
- Published in : JISTaP 10 (2022) 56-65
Fulltext: PDF;
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The first disk-based custodial storage for the ALICE experiment
/ Un Ahn, Sang (KISTI, Daejeon) ; Kim, Jeongheon (KISTI, Daejeon) ; Han, Heejune (KISTI, Daejeon) ; Lee, Seung Hee (KISTI, Daejeon) ; Yoon, Heejun (KISTI, Daejeon)
We proposed a disk-based custodial storage as an alternative to tape for the ALICE experiment at CERN to preserve its raw data. The proposed storage system relies on Redundant Array of Independent Nodes (RAIN) layout – the implementation of erasure coding in the EOS storage suite, which is developed by CERN – for data protection and takes full advantage of high-density Just-Bunch-Of-Disks (JBOD) enclosures to maximize storage capacity as well as to achieve cost-effectiveness comparable to tape. [...]
2021 - 7 p.
- Published in : EPJ Web Conf. 251 (2021) 02051
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021, pp.02051
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A Natural Model of Spontaneous CP Violation
/ Girmohanta, Sudhakantha (YITP, Stony Brook) ; Lee, Seung J. (Korea U. ; CERN) ; Nakai, Yuichiro (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiaotong U.) ; Suzuki, Motoo (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiaotong U.)
We examine the possibility of building a natural non-supersymmetric model of spontaneous CP violation equipped with the Nelson-Barr (NB) mechanism to address the strong CP problem. Our approach is to utilize a doubly composite dynamics where the first confinement of the CFT occurs at the scale of spontaneous CP violation (SCPV) and the second confinement at the TeV scale. [...]
arXiv:2203.09002; YITP-SB-2022-10; Stony Brook preprint YITP-SB-2022-10.-
2022-12-05 - 9 p.
- Published in : JHEP 2212 (2022) 024
Fulltext: document - PDF; 2203.09002 - PDF;
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The Forward Physics Facility at the High-Luminosity LHC
/ Feng, Jonathan L. (UC, Irvine) ; Kling, Felix (DESY) ; Reno, Mary Hall (Iowa U.) ; Rojo, Juan (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Soldin, Dennis (Delaware U.) ; Anchordoqui, Luis A. (Lehman Coll.) ; Boyd, Jamie (CERN) ; Ismail, Ahmed (Oklahoma State U.) ; Harland-Lang, Lucian (Oxford U. ; Oxford U., Theor. Phys.) ; Kelly, Kevin J. (CERN) et al.
High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from the ATLAS interaction point and shielded by concrete and rock, will host a suite of experiments to probe Standard Model (SM) processes and search for physics beyond the Standard Model (BSM) [...]
arXiv:2203.05090; UCI-TR-2022-01; CERN-PBC-Notes-2022-001; INT-PUB-22-006; BONN-TH-2022-04; FERMILAB-PUB-22-094-ND-SCD-T.-
Geneva : CERN, 2023-01-20 - 413 p.
- Published in : J. Phys. G 50 (2023) 030501
Fulltext: FERMILAB-PUB-22-094-ND-SCD-T - PDF; 2203.05090 - PDF; blank - PDF; Fulltext from Publisher: PDF; External links: Fermilab Library Server; eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.030501
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Physics of Infinite Complex Structure Limits in eight Dimensions
/ Lee, Seung-Joo (IBS, Daejeon) ; Lerche, Wolfgang (CERN) ; Weigand, Timo (Hamburg U., Inst. Theor. Phys. II ; Hamburg U., Dept. Math.)
We investigate infinite distance limits in the complex structure moduli space of F-theory compactified on K3 to eight dimensions. While this is among the simplest possible arenas to test ideas about the Swampland Distance Conjecture, it is nevertheless non-trivial enough to improve our understanding of the physics for these limiting geometries, including phenomena of emergence. [...]
arXiv:2112.08385; CERN-TH-2021-214; CTPU-PTC-21-41; ZMP-HH/21-24.-
2022-06-08 - 58 p.
- Published in : JHEP 2206 (2022) 042
Fulltext: 2112.08385 - PDF; document - PDF;
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Seeking an alternative to tape-based custodial storage
/ Ahn, Sang Un (KISTI, Daejeon) ; Betev, Latchezar (CERN) ; Bonfillou, Eric (CERN) ; Han, Heejune (KISTI, Daejeon) ; Kim, Jeongheon (KISTI, Daejeon) ; Lee, Seung Hee (KISTI, Daejeon) ; Panzer-Steindel, Bernd (CERN) ; Peters, Andreas Joachim (CERN) ; Yoon, Heejun (KISTI, Daejeon)
In November 2018, the KISTI Tier-1 centre started a project to design, develop and deploy a disk-based custodial storage with error rate and reliability compatible with a tape-based storage. This project has been conducted in collaboration with KISTI and CERN; especially the initial design was laid out from the intensive discussion with CERN IT and ALICE. [...]
2020 - 9 p.
- Published in : EPJ Web Conf. 245 (2020) 04001
Fulltext from publisher: PDF;
In : 24th International Conference on Computing in High Energy and Nuclear Physics, Adelaide, Australia, 4 - 8 Nov 2019, pp.04001
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Proceedings of the second MadAnalysis 5 workshop on LHC recasting in Korea: Introduction
/ Araz, Jack Y. ; Conte, Eric ; Ducrocq, Robin ; Flacke, Thomas ; Fuks, Benjamin ; Jeon, Si Hyun ; Kim, Taejeong ; Ko, Pyungwon ; Lee, Seung J. ; Ruiz, Richard et al.
2021 - 6 p.
- Published in : Mod. Phys. Lett. A 36 (2021) 2102001
In : 2nd MadAnalysis 5 workshop on LHC recasting in Korea, Seoul, Korea, Republic of, 13 - 20 Feb 2020, pp.2102001
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Holomorphic Anomalies, Fourfolds and Fluxes
/ Lee, Seung-Joo (IBS, Daejeon) ; Lerche, Wolfgang (CERN) ; Lockhart, Guglielmo (CERN) ; Weigand, Timo (Hamburg U., Inst. Theor. Phys. II ; Hamburg U., Dept. Math.)
We investigate holomorphic anomalies of partition functions underlying string compactifications on Calabi-Yau fourfolds with background fluxes. For elliptic fourfolds the partition functions have an alternative interpretation as elliptic genera of N=1 supersymmetric string theories in four dimensions, or as generating functions for relative Gromov-Witten invariants of fourfolds with fluxes. [...]
arXiv:2012.00766.-
2022-03-11 - 67 p.
- Published in : JHEP 2203 (2022) 072
Fulltext: document - PDF; 2012.00766 - PDF;
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