Present :

	J.P. Chen
	S. Incerti
	S. Jensen (phone)

Discussion :

	NMR only

- What has been done :

	* Parametrization of water signal amplitude dependence with T1
          and method to extract T1 from our water calibrations (by S. I.)
        * Started study of Helium signal amplitude dependence with RF field (S. I.)
        * Started pick-up coils monitoring through Q curve history (S. I.)
	* Started water calibration studies with new water signal shape (K. S.)
	* Decided to used published T2 value for now

- What needs to be done

	* Effect of T1<>T2 on water shape
	* Water calibrations 
	* Temperature monitoring of water calibrations
	* Water signal vs target position

	* RTD monitoring during each run 
	* RTD summary file for each NMR measurement 
	   (* YOUR HELP IS WELCOME *)

	* Rotation loss
	* AFP loss
	* Cover effect on NMR signal
	* Polarization loss in beam (depending on current, temp.,...)

	* Polarized target history vs time and vs current

	* Model of the water/helium target for absolute calibration
	  and systematic studies
	* Temperature model of the target
	* Polarization and temperature gradients

- Documents :

     Two new technical notes, accessible from our Web page :

     TN #20 : "Method to extract the water longitudinal relaxation time T1", 
     by Sebastien Incerti, 2/1/99. Click here. 

     TN #21 : "Magnetic field cartography of the Hall A 3He polarized target", 
     by Alexandre Deur and Jian-Ping Chen, 2/2/99. Click here