Discussion Overview
The discussion revolves around calculating neutron flux in a specific setup involving a Beam Shape Assembly (BSA) for Boron neutron capture therapy. Participants are exploring the conditions necessary to achieve a neutron flux greater than 5e8 n/sqcm.second at designated points within the assembly.
Discussion Character
- Technical explanation
- Experimental/applied
Main Points Raised
- One participant seeks to determine the neutron flux at the end of cell 7 and notes that the flux of cell 8 is currently less than 5e8.
- Another participant confirms the setup involves lithium-7 on copper within an iron container in a hydrogen-filled space inside a large beryllium sphere, questioning the activity of the neutron source.
- A participant clarifies that BSA stands for "Beam Shape Assembly" and reiterates the target flux of 5e8 n/sqcm.second for Boron neutron capture therapy.
- There is a suggestion that simulating flux inside tissue might be more typical, while also confirming the dimensions of the beryllium sphere and questioning the rate of particle production from the source.
- Another participant specifies that neutron production occurs in cell 3 and emphasizes the need for flux measurements at the end of cell 7.
Areas of Agreement / Disagreement
Participants generally agree on the target flux and the context of Boron neutron capture therapy, but there are varying perspectives on the specifics of the setup and the calculations needed to achieve the desired flux.
Contextual Notes
There are unresolved questions regarding the rate of particle production in the neutron source and the implications of the setup's geometry on the flux calculations.