KLF beamline meeting - December 5, 2024

Agenda

• Announcements

• FLUKA simulations with 20% CPS radiator (Pavel)

• W-plug temperature estimates for 20% radiator (Hovanes)

• Beamline studies with GEANT4 (Richard)

• Any other business

Minutes

Present: Hovanes, Pavel, Vitaly, Tim, Moskov, Eugene, Igor, Sashi, Beni, Richard, Mikhail, Marshall.

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• Pavel continues studying the option of 20% radiator. He included the tungsten material of KLF Active Collimator ~50cm in front of the KPT assembly.

• The γ-beam width in the cave with 20% radiator is considerable wider than with 10% radiator. As the AC diameter is only 6cm wide, there will be large overlap between the beam envelope and AC material leading to power deposition in AC and elevated radiation in the cave.

• Radiation dose rate from neutrons doubled compare to that without AC. γ-dose-rates did not change so much.

• Tim commented that Active Collimator is attached to the KPT assembly and the long distance between KPT and AC may cause elevated radiation rates.

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• Eugene would like to see the same simulation with 10% radiator as he thinks it is suspicious that the temperature of the tungsten plug did not change. Hovanes pointed out that we have copper block around the Be-target with 20% radiator option. This takes away 2.8 KW power from reaching the tungsten plug.