Baseline noise measurements wo injection.
measure noise in both HV and LV.
wings of APV25 using cmc with 128 strip are visible wo injection. (folder CAEN_PS, run name Noise_xxx.dat).
CMC measurements wo injection:
* LV 300kHz, 1MHz + harmonics
* HV also noisy, few peak showed a induction of about 1 mA. the injected noise goese through p-side HV and returns at n-side HV - and vise versa-.
@ caen HV Ctrl (software)
always shows a current with about 0.5 mA with LV and HV switched off....
Measured Primary side of caen wo load (setup attachment 2 and prelimilary res. attachment 1. )
and with load (attachment 3: Load, att. 4 corresponding circuit scheme)
ADC Hot, FIRRun001
room temp pedrun
ADC Hot, FIRRun001, PedestalRun001
ADC Cold diff to hot: 1-3 adc delay config (max 1.5 ns)
ADC Cold diff to hot: 1-3 adc delay config (max 1.5 ns), FIRRun_Cold_001
Temp = 0°C
with room temp i2c config
Temp = room
ADC delay shifted by 3 (1.5ns) all sensors
ADC shifted by 5 (2.5ns) all sensors
Note : n-side (strip nr 200 - 220 shadowhits)
ADC shifted by 9 (4.5ns) all sensors
ADC delay scan at room temp and 20 min after APV I2C config.
measured values at display in the FIR_HOT cfg file.
17:06 first run 20 min after i2c config.
Comparison w/o filter (LC) connected to -z_n side.
Mateo has the results.
no noise injection
see result in the appendix.
base line noise measurement are saved in SYSTEM_CHECK_AFTER_WE.
(noise wings at fw n side decreased !!!)
Measuring noise emitted by our system.
1) noise emmision at the cable from dockbox to the hybrid (fw n and p side)
3 FADC. All Channel/APV25 running (except L3 n first and last -> not connected (bonding))
n-side: all connectors
p-side: 0x01: 1, 2, 4 and 0x02, 1 with L3 p and L4 p (Telescope)
Possible error: Blue connector cable between FADC and DockBox!!!!
telescope: L5-p 3. APV25,
L3-p 0. and 5. APV25
Ladder: all chips working.