PROTO Working Group Meeting



 LN consumption as expected – no obvious leaks [~20% used per 24hrs] 

35 slm recirculation could be reduced if we want to use less LN. 

Check if consistent with Anna’s calculations. 


We used 6.0 Ar, 1x10-4 vacuum, didn’t use getter in inlet – look at decay constant (purity?) – Zoe 

LN truck: we need ~ 2 fills per week? 

TO DO: Evaluate LN need during filling/running then coordinate trucks. 

TPC – Clevios chips not big problem 

Solved problem of hanging plate holes, so need to mount MB on top. 

Will install flanges/cables tomorrow 

➔ List of actions needed to install everything 


TPC and cryostat: 1.5 cm closest approach, 10 cm max distance 

Need to clean cryostat etc. – ultra pure water? 

Tagged source – FDC to investigate which sources are available 

Cobalt-60? Sodium-22? Na22 best according to PS 

YS/FDC check scintillators in lab 

Also need cryopump – YS to discuss with Nicola 

Report back on source/pump etc. next Monday 

Internal note – Ashlea implemented GF comments 

- ZB/GF to discuss tomorrow and upload to doc db 

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    • 5:00 PM 5:30 PM
      Proto-0 system setup and integration 30m
      Speakers: Giuliana Fiorillo (Istituto Nazionale di Fisica Nucleare), Yury Suvorov (Istituto Nazionale di Fisica Nucleare)