Need for writing first interaction information

Output ideas:

• particles made (similar to normal particle output)
• grammage
• slant depth
• location

added Feature request label

marked this issue as related to #537 (closed)

changed title from Need for writing first interacton information to Need for writing first interaction information

Is this for the beta release? Maybe not.

No, I don't think it needs to be

Summarizing the discussion in the last phone call: Keeping track of the first interaction is also needed to define the "shower coordinate system" (z-axis along momentum of the particle entering the first interaction). Currently only the "CR coordinate system" (z-axis aligned with the momentum vector of the particle entering the atmosphere) is available.

This needs:

• Add a "force decay" option
• add a writer for first interaction
  • would be a secondaries process
  • needs to know about obs plane, shower axis

mentioned in merge request !604 (closed)

This was done in !606 (merged)

closed