Agenda

• Fridge status
• Plans for next cool down
• Update on Po210 source --Tommy
  
• A tool to help with stabilization --Tommy
• AOB
  

Fridge status

• Warming up, pressure problem still not resolved
• Jon plans some debugging of sensor
  

Plans for next cool down

A stabilization tool - slides attached below

Po210 source update

• Raul found source for ~$100 but the company does not recommend we use it for our application, the bearbuy order is now cancelled
  
• Isotope Products offers sources compatible with vacuum and low temp applications, I talked to Natalie Kasate (natalie.kasate@ezag.com, 404-352-8677) , 100nCi 210Po or 241Am sources go for $1380 and have ~6 week lead time. Given the cost maybe longevity of 241Am is better if we don't care about having a monoenergetic alpha peak, but we would need to get the RUA amended to add Am241
• Company webpage with catalog is here: http://www.ezag.com/home/products/isotope-products.html, see sources on page 37/38 and 67. Sources on page 67 are no longer offered with 210Po but Natalie says sources on page 37/38 are also compatible with vacuum/cryo work