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Message ID: 171     Entry time: Wed Nov 15 14:18:30 2017
Author: DK 
Subject: Issues and problems encountered 
Objective log on perceived issues.  (As a benchmark, I enumerated 17 such issues on my previous RIB experiment March 2017.)

In no particular order...

1) Sun PC:
  Cannot properly connect to internet, disallowing SSH access
    Important for external monitoring
    Better to control DAQ from ISOLDE data room in case of ISOLDE issues
  Connecting to CERN network screwed with DNS, borking local DNS hence DAQ
  Double mouse clicking often skipped run numbers

2) Vacuum:
  Barely acceptable, and manual gate valve leaked!
    Keep in mind, interlock system showed higher than true values
  44Ti requires a gas cell and vacuum load may increase considerably
    (Chamber needs gas-feedthrough lines and gas-flow control system)
  Cooling lines are known to leak badly

3) SSDs:
  HI detector leak current increased considerably during the run
  Noisy n-n sides
    To be discussed

4) Scalers
  Scalers were made with noisy n-n sides, making interpretation confusing
  We lacked LEMO cables to provided summed p-n scalers

5) Decay halflife
  A simple handheld monitor turned out to be effective for 59Cu
    That won't work for 44Ti ... 

6) Unused aparatus should be minimized
  (Time & money)
  Photodiodes
  ZnS screen / camera
  Manual gate valve (see above)

7) Shift plan/schedule
  No definitive plan -- need pre exp. meeting
  Shift schedule became arbitrary, w/ several flip/flops
  RP requirements limited access to chamber

8) Shift work
  Run log was made with short notice
    Style may not be ideal for data analyst
  Copy/paste errors et al were observed
  Deadtime log was suggested to be added
  (Other issues might be circumvented w/ SSH access to Sun PC)

9) Purpose
  Detail & motivation of exp. was not clear to all members

10) Faraday Cup
  Data taken by TIMBER system, which is better to integrate w/ our DAQ
  	Strange non-physical fluctuations which we like ISOLDE team to resolve
  Timestamp differences of Sun PC and TIMBER PC?

11) Silena HV module
  Module was found to falsely report applied bias

12) Alpha calibration / pulser walkthrough
  Lacking prior to experiment owing to manpower and technical difficulties

13) Sort codes and simulations
  It was common to discuss received vs. expected data w/o fast clear answer
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