Proton Calorimetry/Meetings/2021/03/10

Minutes for UCL Proton Calorimetry Meetings, 10th March

Simon Jolly, Raffaella Radogna, Saad Shaikh, Fern Pannell

Tested DDC232 daisy-chain with resistors, experimental runs listed here.
- Will send another email to Clive and Izzat to ask for help.
- Raffy to get in touch with Marko to get a quote on new DDC232 boards made.
Added new details to the DDC232 page, with latest version of FTDI code.
FTDI code works on Raspberry Pi, with only a few changes to compile command.
- ftdi_tcioflush function not found, but older deprecated version can be used instead.
- Pi is slow, with average time between measurements at about 650us instead of 180us.
- Will benchmark performance of "minimal" version of FTDI code, where data is collected but not processed.
- Will also benchmark performance of "full" and "minimal" versions of FTDI code on Windows.
Will compare channel noise of single DDC232 board with alternate photodiodes replaced with resistors.
Will start investigating non-ROOT-based fit.
- Raffy has suggested to use GNU scientific library.
Working on HEP School problems this week.

Curve with >>16 points can now be displayed over the 16 photodiode bars.
- New Java dummy data generating file has been written to create curve data.
- Line one contains 16 values (photodiode bars)
- Line two contain 16n values (y values of curve points)
- JavaScript then attaches an x-coordinate to each y value when parsed
- Utilising a second (hidden) x-axis on the chart for the curve, the line is shown over the bars.
Will need to start considering deploying a localhost to run this process locally - move away from SSH to the HEP server.
- I have experience with the node.js http-server so will test initially with this. The Apache web server will likely be the lasting choice to host the display, which can be investigated after the http-server tests are successful.

PhD Update: