AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
CIRCE
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<p> <table width="98%" align="center" cellspacing="1" style="border:1px solid #486090;"> <tbody> <tr> <td cellpadding="3px" style="background-color:#486090; font-weidht:bold; color:white;">Quote:</td></tr> <tr> <td cellpadding="10px" style="background-color:#FFFFB0;"><p>On 23/02/2018:</p> <p>After the alpha source calibration of the S2 (See eLog entry #21) we decided to perform a pulser walkthrough for the pin diode on ADC 6 CH 31.</p> <p>The pulser was only connected to the pin diode preamp to ensure it wasnt being split.</p> <p>Note: Since the pulser is still being 50 ohm terminated the amplitude setting is divided by 2 regardless of any signal splitting. Example: Setting a pulse height of 1.0V on the PB-5 corresponds to an output pulse height of 0.5V.</p> <p>The pulser settings for this walkthrough were:</p> <p>Fall Time = 100us</p> <p>Rate = 10.00Hz</p> <p>Delay = 250ns</p> <p>Ampl = varied 1.0V -> 0.25V</p> <p>Pol = POS</p> <p>Pulse Top = Tail</p> <p>Atten = 1X</p> <p>PB-5 Pulse = ON</p> <p>CLAMP = OFF</p> <p> </p> <p>For this test we also needed to change the Delay Amp 1457 delay setting from 1us to 3us to ensure pulses were occuring after the DAQ OR trigger</p> <p>I collected a DAQ run for the following pulse amplitude settings:</p> <p>0.1V, 0.15V, 0.2V, 0.25V, and 0.3V</p> <p>We also attempted 0.05V and 0.07V but were unable to see a clearly defined peak in the spectrum - likely caused by the high level of noise from the CFD we see at the low ADC channels. This should be better optimised at the start of the next shifts.</p> <p>The save name for this pulser walkthrough is: Remote_Objs/RData_1/180223180747</p> <p>See attached "180323_PulserWalk_PinDiode_ADC6CH31.png" for the pulser walkthrough spectrum.</p></td> </tr> </tbody> </table> </p><p> </p>
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