====== Faraday Cup ======

Adone Faraday cup\\
dimensions\\
copper shielding\\


**Current to charge conversion with QDC Caen V965:**

After having performed a pedestal subtracion, the ADC value is converted to charge with this formula:\\

ADC(pede sub)/4095*FS(ch)= Q [pC]\\

where:\\
  * ADC(pede sub) = pedestal subtracted ADC value
  * FS(ch)= range in [pC] of the selected dual range channel  (100pC or 900pC, new version of V965)
  * Q is the charge expressed in pC

**Current to charge conversion with One electron:**

Put on peak the value of 
  * 6.006 for 900pC
  * 54.054 for 100pC


and validate,\\
\\
the #ele control will measure the value of total integrated charge in unit of 10^7 electrons\\

**Current to charge conversion with oscilloscope:**

  -- Integrated Charge with measure reference bars (measure outputted by scope)= C [pV*s]
  -- Pedestal = F[pV*s] (same as signal measure, triggered with DHSTB001 in stby mode)
  -- Internal resistance = R[Ohm]
  -- Bergoz monitor calibration => Q(beam)/Q(out) @ 50 Ohm 
  -- Bunch pulse width = dt [ns]

Formula to obtain iduced charge on WCM via scope:
  Q[pC]=[(C-F)/R]

Formula to obtain mean current from single bunches (To be compared with LINAC WCMTM001 in order to measure transport efficiency):
  I[mA]=  { (C[pVs]-F[pVs]) /50[Ohm]}/dt[ns]