Offline analysis of run0128-0146.

Cuts: tritons, target aperture, beam, and multiplicity=1. Zero-degree infomation was not used.

Attachment 1: 37K(p,t).
Attachment 2: 36Ar(p,t). The thin soild line is for the first excited state at 2091 keV.

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) 

Summary of Brho1 and Brho2 optimizations for the 37Ca beam.

Attachment 1:
Results of the Brho1 scan. Corresponding LISE run numbers are also shown in the figure.
As the beam intensity was fluctuating, the counting rates were normalized with respect to the intensity.
By changing Brho1, we tried to search for the peak of the 37Ca production. The yield seemed to reach the maximum at around 2.10 Tm,
although sometimes the rates were not reproducible (see the data point of the run 306, for example). 

Attachment 2, 3:
Changes of the yield and purity by scanning Brho2. The shaded area corresponds to the width of the slit (shown only for 0%).
They were well optimized at about 1.925 Tm.

A particle identification plot of 37Ca from LISE run 332.

The modular label file has to be modified.

lpcgrit:/home/e748/analysis/nptool/Projects/e755 $ cat ModularLabel_new.txt 
GATCONFMASTER
GATCONFSLAVE
DATATRIG_CATS
TGV_CONFDEC
AGAVA_LTAGH
AGAVA_LTAGL_UP
AGAVA_LTAGL
PLASTIC_Q
T_CATS1_HFdiv
T_CATS1_HF
T_CATS2_HF
T_CATS2_CATS1
T_MM_CATS1
T_MM_CATS2
T_CATS1_Plast
T_CATS2_Plast
T_CATS1_CAVIAR
T_CATS2_CAVIAR
E_D4
E1_D6
E2_D6
T_D4_HF
T1_D6_HF
T2_D6_HF
T_E1D6_CAVIAR
T_CATS_HF_LISE
T_D6_CATS
SCALER_DT
SCALER_CATS1
SCALER_CATS2
SCALER_CAVIAR
SCALER_PLASTIC
SCALER_100Hz
ADC2_VOIE_0
ADC2_VOIE_1
ADC2_VOIE_2
ADC2_VOIE_3
ADC2_VOIE_4
ADC2_VOIE_5
CAVIAR_1_16
CAVIAR_17_32
CAVIAR_33_48
CAVIAR_49_64
CAVIAR_65_80
CAVIAR_81_96

This file is symlinked to /home/e748/analysis/nptool/Projects/e755/conversion/ModularLabel.txt.
We confirmed Caviar data is accessible (see Attachment).

We noticed that the tracking efficiency was only 70% while the timing efficiencies were around 95%.
By lowering the thresholds (see Attachment 5-8) 89% tracking efficiency was achieved.
Note: analyzed run 293 (CATS1 640V, CATS2 670V), first 10000 events, only CATS trigger was selected.

Analyzed run 312 (9C physics run). CATS calibration files with lowered threshold values
(/home/e748/analysis/nptool/Projects/e755/Calibration/cats/CATS1_X.e738.npt, etc.) were used.
Using the total E information from the plastic, tracking efficiencies for each beam species were estimated.
Two different position reconstruction methods (ASECH and CENTROIDE) were also compared.

(ASECH)
9C  94% (see Attachment 2)
8B  86%
7Be 80%
6Li 68%

(CENTROIDE)
9C  98%
8B  91%
7Be 84%
6Li 75%

Reconstructed beam images from run0330.

Tracking efficiencies deduced from run 330 (after replacing CATS1).

9C  89% (see Attachment 1)
8B  88%
7Be 80%
6Li 65%

Caviar is now operating at 700 V. TOF-CaviarX position correlations are clearly seen (Attachment 1).
Position efficiencies for each beam species were estimated by applying plastic Q gates on wire multiplicity
distributions (Attachment 2).

9C  98%
8B  96%
7Be 91%
6Li 84%

The tracking efficiency is diminishing probably due to damaged CATS2.

The tracking efficiency recovered after replacing CATS2.

9C  91%
8B  87%
7Be 77%
6Li 62%

• From any computer (logged as e748 user), type 'online'. This logs you to the lpcgrit server and the online directory
  
• From the command line, run 'start_online' to start the Online code
  From the command line, run 'start_basic_online' to start the Basic_online code
  

• From any computer (logged as e748 user), type 'conversion'. This logs you to the lpcgrit server and the conversion directory
  

• From the command line, run './run_convert.sh run_number'
  This converts the raw data files which have not been converted yet since run_number
  
• From the command line, run './Convert run/run_file_to_convert rootdir/converted_run_name.root
  This converts runs one by one