25 February 2003 DRAGON Minutes 

 Recorder: CJ Present: DH, AL, CW, JR, AO, DG, SE, DO, CN and AB 

 Hardware: 
 We are making progress on various hardware fronts. 
 The Faraday cup assembly should be ready to be given to Heinz.  The plan 
 is to check the profile monitor in air.  Rod Nussbaumer is going to be 
 making improvements to on the high voltage page.  ED2 is conditioning well, 
 however, ED1 keeps tripping because it thinks it is receiving too much 
 anode current. 

  Dave Ottewell is  going to put a buffer tank on the backing line of 
 the turbo pumps. 

 One of the outlying gamma-detectors has a mysterious 2 mm dent in it.   
 JR suggested having two people (one to observe) work on closing and opening 
 the gamma-array. 

 Comments on 12C(alpha,gamma): 
 The source is producing up to 1+ 12C at up to 200nA for up to 9 hours 
 which would be about 60-70 pnA in charge state 3+ at the DRAGON target. 
 They could not look for 2+  due to lack of a special regulator valve that 
 is needed because CO is classified as a poisonous gas. 

 Short Term Beam Plans: 

 We are not going to have beam this week. 

 Next Monday and Tuesday, we may have beam.  We are asking for 1 MeV/u.   
 We plan to measure 12C(alpha,gamma). 

 We plan to install the DSSSD rather than the IC this week.   
 After that, we plan to install the IC. 

 Long Term Beam Plans: 
   o We would like to try the MCP. 
   o We plan to run with 21Ne(p,gamma)22Na checks on the IC. 
   o We also plan to run with 13C(p,gamma) as a background for the 13N 
 experiment. 
   o We plan to run with 16O(alpha,gamma)20Ne(0+) as a way to produce a 
 gamma source of known intensity for the   BGO calibration measurements. 

 Misc.: 
 The strip detector has noise problems; they may be due to the way in which 
 it was installed.  JR suggested that we keep a record of strip detector 
 installation procedures in the hardware logbook.  We should also include 
 the serial number of the detector in the hardware logbook.  It was 
 recommended that we put strip detector instructions in a binder. 

 Removal of the TISOL box presents problems.  When we dismantle things 
 next week, we should record their configuration beforehand. 

 Cooling System: 
 Next week, CW, DH and JD will discuss the cooling system; any other 
 interested parties may join in.  The question is whether we should pipe 
 in cold water to cool the detector, or whether we should use a separate 
 refrigerator.