kek visit to fermilab --- week 2
DESCRIPTION
KEK visit to Fermilab --- Week 2. - Made Interface Bread Board to allow KEK system to switch the clock phase. After resolving grounding issues, every thing works. - Testing of Demod output from KEK system. From KEK Clocking System. To (MAB), going to the phase switches. - PowerPoint PPT PresentationTRANSCRIPT
1
KEK visit to Fermilab --- Week 2
- Made Interface Bread Board to allow KEK system to switch the clock phase. After resolving grounding issues, every thing works.
- Testing of Demod output from KEK system
From KEKClockingSystem
To (MAB), going tothe phase switches
protection: -0.6 volts min, 1.2 volts max, 1 nF to ground
2
Testing the Demod Readout of KEK system
Magic-T50 ohm Module
eccosorb or Gunn Diode
LV biases from MMIC
Jig Board
KEK clockingsystem
(4Khz and 50 Hz)
KEK preamps(x100)
Q1KEK ADC
PS voltages
Mac Mini
3
Start 4Khz clock End 4 Khz clock
no eccosorb
eccosorb
Hard to see changein Demodoutput
with andwithouteccosorb
Demodoutputhas smallglitches anddrifts
4Gunn Diode ONGunn Diode
OFF
GunnDiodeswitchingON/OFFmakesclear change in DemodOutput