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So long RD50

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Marco Bomben and Jörn Schwandt

28 November 2023

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So long RD50

and thank you for all the “defects” ;-)

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Marco Bomben and Jörn Schwandt

28 November 2023

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How many simulations talks there have been?

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Number of simulation talks

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Number of simulation talks

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As in TCAD radiation damage models

these numbers come with no uncertainties!

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… anyway, a bit of statistical analysis

  • average number of talks per ws ~ 7.0 +/- 0.6
    • median is 7�
  • minimum vs maximum: 1 vs 15

Percentiles [%]:

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6

10

25

50

75

90

1.3

3.8

7

10

11

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Talks about simulation in 0th workshop (2001)

  • Z. Li (Silvaco)
  • R. Bates (Medici)
  • M. Huhtinen (defect formation)
  • A. Mainwood (Diamond)
  • Rahman (SiC, Medici)
  • CiS (Silvaco)
  • R. Krause-Rehberg (Computer simulations of vacancy clusters in Si)
  • A.I.Ryazanov (numerical calculations of radiation defect cluster formation)
  • Mika & Catalunya + Montreal (Fluka and radiation levels)

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Some examples

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Z. Li

M. Huhtinen

A. Mainwood

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Talks about simulation in 1st workshop (2002)

  • Sorina Lazanu (modelling of defect production and annealing)
  • Michael Moll (Hamburg model on Neff)
  • Eckhart Fretwurst (Neff using defects from DLTS and TSC)
  • Jörg Stahl (DLTFS simulation)
  • Veronique Boisvert (defects concentrations),
  • Juozas Vaitkus (Simulation of excess carriers)
  • Patrick Roy (Medici, ISE of 3D detectors)
  • Elena Verbitskaya (Simulation of Neff vs dose)
  • Alexander Chilingarov (Modelling Irradiated Silicon Diodes with KURATA)

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10

V. Boisvert

M. Moll

J. Stahl

A. Chilingarov

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TCAD radiation damage models, models and …

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F. Moscatelli et al., 4th WS

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First “new” radiation damage model present at RD50

  • n-type silicon
  • up to 1x1016 cm-2

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Double Junction Simulation for CMS Pixel TB data

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M. Swartz, 6th WS

V. Chiochia, 8th WS

The model is still in use for CMS & ATLAS

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14

3D detectors and Pennicard’s modification

D. Pennicard et al., 11th WS

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15

Effective 2-defect model

R. Eber, 22th WS

For a Silvaco effective 2-defect model see: R. Dalal et al., 24th WS

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Combine surface and bulk damage

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T. Peltola et al., 23rd WS

Ranjeet et al., 23rd WS

Silvaco

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17

Towards to a new radiation damage model for Synopsys TCAD

HPTM

J. Schwandt et al., 27th WS

J. Schwandt et al., 32nd WS

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“New” Perugia model used for LGAD simulation

T. Croci et al., 41st WS

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Defect formation: from Mika to Vendula or revisiting NIEL

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M. Huhtinen, 1st WS

V. Maulerova-Subert et al., 41st WS

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There’s more than TCAD

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KDetSim

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G. Kramberger, 27th WS

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TRACS

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P. De Castro, 25th WS

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Weightfield2

24

F. Cenna, in K. Gregor’s comparison

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Full scale simulation

25

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TCAD is fun but there’s more: TCAD + MC

Examples: PixelAV, ATLAS Radiation Damage Digitizer, Allpix2

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M. Swartz, 6th WS

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TCAD is fun but there’s more: TCAD + MC

Examples: PixelAV, ATLAS Radiation Damage Digitizer, Allpix2

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M. Bomben, 41st WS

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TCAD is fun but there’s more: TCAD + MC

Examples: PixelAV, ATLAS Radiation Damage Digitizer, Allpix2

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S. Spannagel, 31st WS

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TCAD is fun but there’s more: TCAD + MC

Examples: PixelAV, ATLAS Radiation Damage Digitizer, Allpix2

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M. Bomben, 42nd WS

Back side

Pixel side

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TCAD is fun but there’s more: TCAD + MC

Examples: PixelAV, ATLAS Radiation Damage Digitizer, Allpix2

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Back side

Pixel side

and, fast forward, K. Nakkalil, 43rd WS, tomorrow :-)

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And as RD50,

also this talk comes to an end :-(

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Conclusion and Outlook

Of course it was impossible to show all the simulation and modeling work done over more than 20 years of research

Despite the research in RD50 was clearly lab/experiment based, with huge amount of time spent measuring, very often measurements were presented together with simulations, to get further insight into results

Simulations helped to make important predictions for operation/future detectors

Sometime people went beyond off-the-shelf tools and created their own

With the challenges of detectors at future high lumi/energy colliders ahead we believe the role of simulations will become even more central

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Thank you for your attention!

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