• Target Impact (from CATS)
  
• Deuton in dE-E
  
• Incoming 38Ca, TCATS2_HF in [200;1000]
  
• Outgoing (Z=20)Ca, dE-E (IC-PL)
  

• see 10 times more statistics in the ground states of 37Ca than in 36Ca
  
• resolution of the t channel is 80% of the resolution of the d channel
  
• excited states in (p,d) channel are more populated than the ground state
  

We scanned Brho2 values so that the yield for 36Ca is maximized (LISE run0282-0284, F31 = +/-6 mm). 

Attachment 1:
Yields of 32S, 30P, 29Si (strong contaminants) and 36Ca as a function of the Brho2 value.
We can see that different contaminants dominate if the Brho2 setting is changed. The shaded region corresponds to the momentum spread
determined by the slit F43 (0.25%, shown only for DeltaBrho2 = 0%). The 36Ca yields are too small to see.

Attachment 2:
36Ca yields that cannot be seen in the previous figure.

Attachment 3:
Fitting of 36Ca yields assuming that the distribution is a Gaussian.

Offline analysis of LISE run0281. F31 = +/-0.6 mm, without wedge.
The number of counts of 37Ca was 900/50 = 18 times larger than 36Ca.
Comparing this result with a LISE++ simulation, if the Brho setting is optimized for 37Ca,
we expect to gain 12 x 4 = 48 times higher beam intensity.
Considering that the EPAX parametrization tends to over predict production cross-sections of neutron-deficient
exotic nuclei, the prediction for the 37Ca yield would be more reliable than 36Ca.
A rough estimate of the beam intensity is shown below.

36Ca 1.5 pps (100 nA, +/-6 mm) -> 37Ca 100 pps (100 nA, +/-6 mm) -> 37Ca 16 kpps (4 uA, +/-24 mm) 

• start: 2h12
  
• start: 3h11
  
• CATS2 tripped at the end of run
  

• start: 3h11
  
• start: 4h26
  
• Observed T_CATS2_HF shift
  

• start: 4h25
  
• start: 5h22
  
• beam intensity fluctuations
  

• start: 5h22
  
• start: 6h57
  

• start: 6h56
  
• start: 8h06
  
• Very strong drift of T_CATS_HF signals (see attached plot) and even total disappearance. Call the PCP but they said there is no issue on their side. Stopped the run. 5 min Later, all HF related signals are back.....
  
  

• start: 8h07
  
• start:
  
• T_CATS_HF back to normal. Problem for run before remains unidentified. There was no change at all from our side.
  

• The T4 resolution for strips X has been degraded between the two source runs.
  
• The T4 resolution for strips Y remains ok and should be used for the analysis (slightly degraded only)
  
• From the pedestal extrapolation, it also seems that there was a global drift for some channels.
  

• Pedestal run on T1234
  

• Pedestal run on T5678
  

• alpha Calibration for T1234 with T4 HV 60->80V
  

• Target Impact (from CATS)
  
• Triton in dE-E
  
• Incoming 40Ca, TCATS2_HF in [1600;24000]
  

• Cut applied
  
• Kinematics, Exitation energy and llaboratory angle for two possible pics
  
• Exitation energy per telescope for T1 to T4
  

• There is no clear signal of ground state or any exited states
  
• One can mybe distinguish pics correspond to different states but badly separated
  
• During this beam time, Ionization Chamber was not working. Analysis of the 38Ca(p,t)36Ca reaction without this cut provide exactly the same shape of background. This background is probably due to fragmentation of the 40Ca beam in HAVAR foil, producing tritons undistinguishable from reaction tritond without cut on outgoing heavy ion.
  
  Other runs in 40Ca with the CHIO are probably needed to make good Ex reconstruction and tritons calibrations