Change n+n FEE64 aida04 d8:80:39:41:f6:b7
 asic #1 faulty

aida04 MAC from d8:80:39:41:f6:b7 to d8:80:39:41:ba:2b

restart dhcpd ( systemctl restart dhcpd )


DSSSD bias -150V -5.17uA - attachment 1

FEE64 temperatures OK - attachment 2

All system wide checks OK

ADC data item stats - attachment 3
 High rates observed in all FEE64s *except* aida01 & aida04 => aida04 asics #1-4 OK
 CC/VP have commenced cabling bPlast - will await completion of install to review noise
 

n+n 1.8.W spectra - 20 us FSR - attachments 5
 
per FEE64 rate spectra - attachment 4



18:20 AIDA noise status test

      bPlast - cabling complete, power on - all sides 
      BB7 Mesystec preamps connected, power off, no detector HV

DSSSD bias -150V -5.355uA - attachment 6

FEE64 temperatures OK - attachment 7

All system wide checks OK

ADC data item stats - attachment 8
 Rates c. 10-20k mostly dominated by a few 'hot' channels

per FEE64 rate spectra - attachments 9 & 10

p+n 1.8.W spectra - 20us FSR - attachment 11
 bPlast using 152Eu source for test - signal observed aida01 3.8.W may be recoil electron from Compton event
n+n 1.8.W spectra - 20 us FSR - attachment 12

Some photos of bPlast & BB& preamp/cabling attached

re-bPlast note that
cables screened 3M 1245 + Kpaton + drain wire -> drain wires *not* connected to ground
PSU ch 4 not ground referenced