DRAGON Meeting May 30th, 2006

In attendence:

DH, JP, CR, JZ, CV, MT, DO, CD, JC, LB, PM, AH, and EOC (recorder)

1. Minutes:

Corrections: (CR - ?) = CR
Business arising from minutes:

The CSB has been taken out of the target, its still intact.
It is being stored at CV's desk.

2. Hardware/Software/DAQ

PM - Thermocouples are closer to getting done and connection on buffer tank 
is fixed.
JP - DAQ is still in limbo after upgrade
DH will look into NOVA status

3. GEANT Simulations 12C(a,g) (EOC)

From GEANT: gamma loss and recoil loss may be correlated to an extent, 
more simulations with better stats to confirm.  See first part of the 
attached .ppt file for details.

There are still worries regarding the actual acceptence (GEANT says (95%)). 
The inclusion of more elements may help reduce acceptence to experimental 
values.

Soon will move on to alpha studies

4. CSD Simulations 12C(a,g) (JZ)

The current model is having trouble matching up with DRAGON data on recoil 
distributions (ratio of 6+ to 5+ fractions) at low pressures.  

Models that fall between the two main assumptions (alpha particle keeps 
electrons / alpha particle loses electrons) are being tried to fit DRAGON and 
ERNA data.

DH notes that at 4 Torr (and 8 Torr), where the majority of experiments 
took place, data agrees nicely.

5. Other Business

i) LB has draft of 12C(a,g) paper, DH to read and discuss next meeting.

ii) Alpha source has arrived from Yale, JC to pick up/deal with.