TPC material description in MC Data MC comparison by Ana Marin - - PowerPoint PPT Presentation

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tpc material description in mc
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TPC material description in MC Data MC comparison by Ana Marin - - PowerPoint PPT Presentation

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TPC material description in MC Data MC comparison by Ana Marin Material and geometry check and updates New results 2010-03-16 Marek Kowalski, Offline week, 1 March 2010 Number of gamma conversions vs. radius ICV IFC TPC

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2010-03-16 Marek Kowalski, Offline week, March 2010 1

TPC material description in MC

  • Data – MC comparison by Ana Marin
  • Material and geometry check and updates
  • New results
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2010-03-16 Marek Kowalski, Offline week, March 2010 2

TPC

ICV IFC

Number of gamma conversions vs. radius

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2010-03-16 Marek Kowalski, Offline week, March 2010 3

  • Updated material of the central drum (ICV)

added 2 x 0.1 mm of epoxy film, missing on my drawings 0.47% of X0 → 0.54% of X0

  • Updated material of the inner field cage (IFC)

„Czech error” corrected (swapped digits) instead of 3 x 0.1 mm of prepreg which is on my and Danilo’s drawings, in reality we have 2 x 0.25 mm, according to Wolfgang Klempt 0.4% of X0 → 0.73 % of X0

Measures taken to match the data (1)

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2010-03-16 Marek Kowalski, Offline week, March 2010 4

ICV after the firts round of corrections

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2010-03-16 Marek Kowalski, Offline week, March 2010 5

IFC after the firts round of corrections

Data Bulk of material described correctly, but…

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2010-03-16 Marek Kowalski, Offline week, March 2010 6

Measures taken to match the data (2)

  • Updated material of the resistor rod (Cu plates, resistors)
  • Updated material of makrolon rods (Al rings at joints)
  • Updated azimuthal position of the resistor rod
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2010-03-16 Marek Kowalski, Offline week, March 2010 7

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2010-03-16 Marek Kowalski, Offline week, March 2010 8

Agreement within 5% IFC joints resistor chain for guard rings

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2010-03-16 Marek Kowalski, Offline week, March 2010 9

Measures taken to match the data (3)

  • Added construction joints for the IFC (epoxy glue)
  • Added resistor chains for guard rings (ceramics)
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2010-03-16 Marek Kowalski, Offline week, March 2010 10

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2010-03-16 Marek Kowalski, Offline week, March 2010 11

Material distribution in MC

resistor chain resistor rod

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SLIDE 12

2010-03-16 Marek Kowalski, Offline week, March 2010 12

Data/MC comparison

resistor rod

resistor chain resistor chain+joint joints

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SLIDE 13

2010-03-16 Marek Kowalski, Offline week, March 2010 13

More updates

  • OFC material properties (the same Czech error as in the IFC)

0.4% of X0 → 0.51% of X0

  • Segmentation of the OCV and OFC (6 segments)
  • Central membrane

Geometry of the membrane holidng ring Clamps for the membrane fixation

The TPC now is 3.89% of X0 thick, as compared to 3.5% of X0 previously R<85 cm

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2010-03-16 Marek Kowalski, Offline week, March 2010 14

Coding of all these details would be a nightmare without the Geometrical Modeler by Andrei Gheata

The material distribution of the central electrode is being tested (Ana). For the OFC one has to wait for the data from the TRD