Hashemi, B.* ; Hartmann, N.* ; Sharifzadeh, S.* ; Kahn, J.* ; Kuhr, T.*
    
    
        
Ultra-high-granularity detector simulation with intra-event aware generative adversarial network and self-supervised relational reasoning.
    
    
        
    
    
        
        Nat. Commun. 15, 16 (2024)
    
    
    
      
      
	
	    Simulating high-resolution detector responses is a computationally intensive process that has long been challenging in Particle Physics. Despite the ability of generative models to streamline it, full ultra-high-granularity detector simulation still proves to be difficult as it contains correlated and fine-grained information. To overcome these limitations, we propose Intra-Event Aware Generative Adversarial Network (IEA-GAN). IEA-GAN presents a Transformer-based Relational Reasoning Module that approximates an event in detector simulation, generating contextualized high-resolution full detector responses with a proper relational inductive bias. IEA-GAN also introduces a Self-Supervised intra-event aware loss and Uniformity loss, significantly enhancing sample fidelity and diversity. We demonstrate IEA-GAN’s application in generating sensor-dependent images for the ultra-high-granularity Pixel Vertex Detector (PXD), with more than 7.5 M information channels at the Belle II Experiment. Applications of this work span from Foundation Models for high-granularity detector simulation, such as at the HL-LHC (High Luminosity LHC), to simulation-based inference and fine-grained density estimation.
	
	
	    
	
       
      
	
	    
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        Scientific Article
    
 
    
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        english
    
 
    
        Publication Year
        2024
    
 
    
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        2024
    
 
    
    
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        2041-1723
    
 
    
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        2041-1723
    
 
    
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	    Volume: 15,  
	    Issue: 1,  
	    Pages: 16 
	    Article Number: ,  
	    Supplement: ,  
	
    
 
    
        
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            Nature Publishing Group
        
 
        
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            London
        
 
	
        
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        Helmholtz AI - KIT (HAI - KIT)
    
 
    
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        Grants
        Helmholtz Association Initiative and Networking Fund under the Helmholtz AI platform grant
Deutsche Forschungsgemeinschaft under Germany's Excellence Strategy
German Federal Ministry of Education and Research (BMBF)
    
 
    
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        Erfassungsdatum
        2024-06-17