INTT Weekly meeting

Thursday 30 Oct 2025, 20:00 → 23:00 US/Eastern

Meeting URL 

https://riken-jp.zoom.us/j/92149923535?pwd=sbLcakxQeRQrch8dnJfJ8g1NiEdvKa.1

[Itaru: Government shutdown]
- We expect some announcement from lab in mid November.
- SDCC will be shut down also, no email service either.
-- We might need to transfer data to somewhere else in case that happens.

20:00 → 20:20 INTT chip saturation issue

Speaker: Shan-Yu Chen (National Central University)

INTT_20251031.pdf

[Shan-Yu: INTT chip saturation issue]
- Number of hit 68 is in a given chip.
- This is different issue from the event saturation issue.
-- But it is nice to check chip activity on the event right after the event saturation happen.
- Is the chip capable of processing 128 hits at the same time with the sPHENIX BCO frequency?
-- It is hard to debug in the calibration mode because require modification of FPGA to be such frequency.

20:20 → 20:40 Missing acceptance issue & BCO QA

Speaker: Jaein Hwang (Korea University)

INTTmeeting_10_31_Decoder.pdf

[Jaein: Missing acceptance issue & BCO QA]
- Adding the statement in the decoder is slowing process?
-- A little bit, but the processing time is much faster than the other system.
- Information of the num of BCO sent from GTM to each Felix server is kept in the GL1 data
-- Why does each Felix has the different number of BCOs from the GTM to the server?
-- Because each server has different event size, although the combining process stop at the same file size limit.
- A very tiny number of missing packet happens for all servers, but it is negligible and acceptable.
- No need to push Raul/Martin to look into the issue. The offline fix is already good enough.
- Compile the information about the issues into the wiki page.