ISOLDE 44Ti meeting notes
23 Oct 2018 

==To be ordered==

*Gas bottles at CERN - Helium and (likely) Argon.  
  Gas bottles for He, Ar can be supplied by CERN
  N2 was also approved, but bear in mind volume required

*Spanners to help repair water chiller leak.
  Ordered but did they arrive?

*PPE (Safety)
  Boots and hardhats for new members

*New valves for gas flow system

*Gas cell stands for each gas cell
  Order was submitted.

*Photodiodes
  Order of 10 to arrive 7 Nov

*Au foils
  Order placed with Paul at STFC

==To be repaired / replaced==

*Manual gate valve between SEC and Edinburgh chamber
  New one has arrived - plan to leak check it
  Converter flange to check w/ He sniffer ordered arrived
    Awaiting clamps that were ordererd

  Repair kit was ordered.

*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
  Responsible: Katie, Daid, ...

  Not yet repaired, Peter searches for manual
  Alternative module was found and tagged for our use, needs testing

*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
  Responsible: Katie, Daid, ...

  Useful for photodiode trigger.  Take replacement back to CERN.

  Tagged for repair.  
  Alternative module was found and tagged for our use, needs testing
  
*Take additional Pre-amp to CERN for Photodiode?
  There are several in the Miniball cupboard...

*Teflon chamber feet stands - done

*Chamber stand wheel struts
  Responsible: Peter, Daid

  We have the necessary preparations, we await Peter.
  We will use 118 cm since garage direction is ~121 cm

==Decisions==

*How shall we integrate the beam intensity delivered to target?
  Total integrated current, with efficiency-calibrated Ge detector
  Gold foil w/ back-scattering to photodiode?  
    Needs foil, mounts for foil & photodiode.  Other parts prepared.
  Alpha scattering in SSDs is most preferred.


*Photodiode degrader foil for isobaric check
  10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
  What thickness is sufficient for 44Sc / 44Ti separation?
    (...or other suspected contamination...)
  Need to know the beam energies!  This is quick work.

*Target ladder setup -- IMPORTANT
  How many targets can fit & what should they be?
    3 mm collimator
    Photodiodes (takes two slots)
    Viewing screen (?)
    1 mm collimator (?)
    Blank target frame (?)

==Work==

*Gas cell
  Responsible: Katie, Conor

  Gas cell eventually needs to go to CERN.  
  
  New needle valves and some piping for the gas flow control.

  **Window material / thickness
    9, 12.5 um Al 
    3, 6 um Ti 
    2.5 um Havar 

  3 um Ti, 12.5 um Al are installed with leak rates < 1 Torr/hr.


*Chamber alignment
  Responsible: Peter Black

  Previously, we contacted the survey team to come assist.
  Alignment parts are all at CERN.

*DAQ PC has any further issues to get on the network?
  Responsible: Tom Davinson  
  (If PC is turned on, contact Ruchi as she would like some data.)