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  Virtual TOPAS-nBio meeting on October 21, 11 am EST

  jschuemann announced Sep 27, 2025 in Announcements

  

  

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  Potential User Meetings this year

  jschuemann announced Apr 25, 2025 in Announcements

  

  

  

  

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  [Run issue]: Unable to run simulations with indirect damage enabled

  LucasHenriqueDG asked Sep 12, 2025 in Run-Problem · Unanswered

  

  

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  TOPAS-nBio v4.0 release

  tmasilela announced Jul 29, 2025 in Announcements

  

  

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  [Run issue]: Running CellCulture.txt

  alfiafazimah asked Jul 7, 2025 in Run-Problem · Closed · Unanswered

  

  

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  [Issue]:Scoring DNA damage on cell nucleus

  LucasHenriqueDG asked Dec 8, 2024 in Simulation-question · Unanswered

  

  

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  How to replicate the Ionisation Cluster Size Distributions from Ramos-Mendez et al. 2018 - "Fast calculation of nanodosimetric quantities..."

  question Science questions

  j-m0rris asked Jun 20, 2025 in Simulation-question · Unanswered

  

  

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  [Simulation question]: How to score DNA damage in Cell Culture geometry? Is it possible?

  question Science questions

  DiazaOA asked Jun 17, 2025 in Simulation-question · Unanswered

  

  

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  [Simulation question]: Issue with Generating Parallel Beam from a Ring Source in TOPAS

  question Science questions

  SFR1993 asked May 31, 2025 in Simulation-question · Unanswered

  

  

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  [Run issue]: Null pointer usage issue

  nknanfeng asked May 30, 2025 in Run-Problem · Unanswered

  

  

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  [Simulation question]:Example IRTcummulative simulation on e_aq^-1

  question Science questions

  mmvs-j asked Mar 27, 2025 in Simulation-question · Unanswered

  

  

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  [Feature request]:Does TsIRTStrandBreaks scorer support DSB statistics, or is additional configuration required?

  WKjie asked May 21, 2025 in Feature-Request · Unanswered

  

  

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  [Run issue]: Custom geometry component not recognised

  TheRealDoomSlayer asked May 8, 2025 in Run-Problem · Unanswered

  

  

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  [Simulation question]:Changing Scavenger Concentration in TOPAS-nBio Does Not Significantly Affect /Gy/Da and umol/J Metrics

  question Science questions

  WKjie asked May 6, 2025 in Simulation-question · Unanswered

  

  

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  [Simulation question]: g4em-dna_opt2 vs. g4em-standard_opt4 (dose point kernel for monoenergetic electrons and photons)

  question Science questions

  claus-e-andersen asked Mar 23, 2025 in Simulation-question · Answered

  

  

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  Defining Tumor/Cancerous Cell Nuclues

  apsholar asked Mar 31, 2025 in Feature-Request · Unanswered

  

  

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  [Run issue]:How to Correctly Add Oxygen in TOPASChemistry_Extended?

  Edgarchen666 asked Mar 18, 2025 in Run-Problem · Unanswered

  

  

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  [Simulation question]:Setting up 0.27 mM oxygen and IRT temperature functionality causes SSB to become 0

  question Science questions

  WKjie asked Mar 17, 2025 in Simulation-question · Unanswered

  

  

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  [Simulation question]:Error of TsEmDNAChemistryExtended

  question Science questions

  Edgarchen666 asked Mar 11, 2025 in Simulation-question · Answered

  

  

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  [Simulation question]: How to Correctly Add Oxygen Reactions in TOPASChemistry_Extended?

  question Science questions

  Edgarchen666 asked Mar 16, 2025 in Simulation-question · Unanswered

  

  

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  [Simulation question]: Seeking Help with TOPASChemistry_Extended Reaction Configuration Errors

  question Science questions

  Edgarchen666 asked Mar 16, 2025 in Simulation-question · Unanswered

  

  

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  [Feature request]:How to uniformly distribute PUC19 plasmid in a cubic volume instead of a spherical water phantom?

  WKjie asked Mar 13, 2025 in Feature-Request · Unanswered

  

  

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  [Run issue]:Issue with TsEmDNAChemistryExtended and IRTCummulative Implementation

  Edgarchen666 asked Mar 10, 2025 in Run-Problem · Unanswered

  

  

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  [Simulation question]: TsNucleus problem with provided configuration

  question Science questions

  tiagoaaazevedo1 asked Feb 26, 2025 in Simulation-question · Answered

  

  

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  [Run issue]: Segmentation Fault in TOPAS-nBio with Chemistry Enabled at Higher Doses

  isabel24cl asked Mar 7, 2025 in Run-Problem · Unanswered

  

  

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