NEW TMM chamber operation - PADME-Experiment/padme-fw GitHub Wiki

by F. Ferrarotto 21/5/2025

The TMM Chamber has been connected to board 14 in the PADME HV crate. The channels are from 20 to 22 and the names are below.

TMMCHAN2 │ 0.00 V 2.000 uA │14.0020

TMMCHAN1 │ 300.00 V 10.000 uA │14.0021

TMMCHAN0 │ 0.00 V 2.000 uA │14.0022

The most important parameters:

HV limit : 300 V - Current limit : 100 uA - Ramp up rate : 1V / second (at most)

--> At the moment ONLY TMMCHAN1 has to be set up <-----

Monitoring step - 20 second. To monitor: Voltage, Current , status should be sufficient

At some point we should also include this in the DCS database

SETTING UP AND DOWN HV

  1. log on the l0padme1 machine as dcs : ssh (-Y) dcs@l0padme1 for password ask to : [email protected] or [email protected]
  2. go to the padme-dcs folder cd padme-dcs
  • to set up ALL channels to the standard voltage ./onvolt_tmm_all.exe --> the standard voltage map is on padme-dcs/maps/tmmmap_2024.txt (ASCII editable file)
  • to set down ALL channels to 0 ./offvolt_tmm_all.cc
  • to set ALL channels to the standard values (BUT it does NOT put it ON !) ./setvolt_tmm_all.exe --> the standard voltage map is on padme-dcs/maps/tmmmap_2024.txt

The HV monitoring will be started within the auxiliary programs by the DCS automatically and will give

  1. the current values with timestamp in : padme-dcs/data/CAENHV_MMT
  2. a history file (frequency each 2 secs) in : padme-dcs/history/CAENHV_MMT

data will be available also (at ~20 sec frequency) inside the Padme dcs monitoring at : http://l0padme3.lnf.infn.it:9090/dcs --> inside the menu go to CHAMBER/TMM/CHAMBER_TMM

SETTING UP AND DOWN DRIFT (Module 6, channel 38)

  1. log on the l0padme1 machine as dcs : ssh (-Y) dcs@l0padme1 for password ask to : [email protected] or [email protected]
  2. go to the padme-dcs folder -> cd padme-dcs
  • to set up All channels to the standard voltage (300 V as on the HV Crate) : ./onvolt_tmmdrift_all.exe
  • to set down ALL channels to 0 : ./offvolt_tmmdrift_all.cc
  • to set ALl channels to a desired voltage (AND it does set it ON!) ./setvolt_tmmdrift.exe --> it will ask you which voltage you want to set it at (max 3000 V)

The DRIFT Voltage monitoring will be started within the auxiliary programs by the DCS automatically and will give

  1. the current values with timestamp in : padme-dcs/data/MMTDRIFT.txt
  2. a history file (frequency each 2 secs) in : padme-dcs/history/MMTDRIFT.txt

data will be available also (at ~20 sec frequency) inside the Padme dcs monitoring at : http://l0padme3.lnf.infn.it:9090/dcs --> inside the menu go to CHAMBER/TMM/CHAMBER_TMM