Minutes of the DRAGON Meeting, June 8, 2004  

Present: JDA, JC, ML, DG, CV, MA, AR, DH, DO, Pat Walden, LB, CR, PM, 
KO (recorder)

1. Minutes from last meeting, no changes need to be made

2. a) DFOT reported on the status of the new TRACKS for the DRAGON TAIL
	-the bigger pieces are in the shop
	-Will be ready by June 25
	-Hart doesn't think there will be a problem
   
   b) JC reported on the status of the HORN, the positron catcher assembly for 26Alm
	-JC and DH have identified several working detectors (see Attachment 1)
	-Once ready, should be able to install in just a couple of hours
	-What needs to be done:
		-Find way to mount the sodium iodine detectors and Pb shields
		-Should be ready for Monday
     JDA - We should try and test offline.
         - What about the cables?
     CR  - They are in the shop, and will be ready Thursday afternoon

3. a) CR talks about 26Al run
	-June run plan summary (see Attachment 2)
		-Outlines preparation before run, main objectives, and schedule
	-Discussion..
    MCP foils need to be made/installed
    DH  - we should put in scalar channels, one for MCP, one for ion                                                                                          chambers
    JDA - A reminder that EVERYTHING goes into logbook and run sheets
    - Double maintenance day is for beam development and training
    - Can either tune the beam on Tuesday or Thursday day of next week (OLIS is running on Tuesday)
    JDA - need to push for 26Al beam before Saturday
    LB  - Suggested testing the transmission of the mesh-supported 
         windows from the resonance yield, but we need good statistics, which we won't have
    JDA - Must measure the efficiency of the two new systems
        - We also need to test an open 22Na source, to help calibrate the HORN, 
          but we need to look into getting one
    DH  - The west target station has been conditioned to 57-58 kV
         The East target module TM2 has a short
    JDA - "Good news" is that ECR source is now producing 19Ne, at a rate of ~1x10e7 /sec.  
          This was achieved with a proton beam of 30 uA
	- Will put up a schedule after the meeting

   b) Training sessions
	- New people will get some one-on-one sessions with trainer
       	- The shifts will again be 8 hours: 8AM-4PM, 4PM-12AM, 12AM-8AM

   c) Data acquisition's current state
	DH - Operating system is upgraded
	   - What happened is when job was half done, the effort then moved over to TWIST
           - As of yesterday afternoon, there was no PAW or MIDAS (although Jonty is working on it),
             and NOVA was back
           - The one hardware change that is significant is that the six channel scalar should be 
             changed to a twelve channel scalar
           - The histogram program needs the biggest changes

	   
4.  AR reported on what he and DG had been working on while waiting for computers to come back on
	- The low energy tail in the gamma spectrum data for a curium source was explored (see Attachment 3)
		-What was the cause?
		  a) 8Pi suggested that it was background gamma radiation, this was tested 
                     and the data does not match up
                  b) Speculating that is it most likely due to neutrons from the reaction, 
                     but this is hard to simulate using GEANT 
	- The same thing was looked at for a Cobalt sample with a low  energy tail
		- As there were no neutrons, it was thought that is was beta particles instead. 
		  This was simulated in GEANT and it produced a bit of a low energy tail (see Attachment 3)

5. Last minute notes
	- JC reported on an alarm that will sound in the counting room if the ion chamber voltage trips
		- Perhaps a summer student can put on the website how the alarm works
	- JDA mentioned if anyone has any extra time, help CR to get ready for the runs
	- LB mentioned that the laser gets rid of 26Na in 26Al beam, but it does not help with 
          separating the 26mAL from 26gAl


6. Meeting adjourned, 11:30AM