Difference between revisions of "2n preliminary data analysis"

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Solid angles of subtended by the detectors and defined by point source:
 
Solid angles of subtended by the detectors and defined by point source:
 
{|class="wikitable1"
 
{|class="wikitable1"
|Det E //
+
|Det E ||
 
|0.106 ||
 
|0.106 ||
 
|0106
 
|0106
 
|sr
 
|sr
 
|-
 
|-
|Det M
+
|Det M ||
|0.118
+
|0.118 ||
 
|0.119
 
|0.119
 
|sr
 
|sr
 
|-
 
|-
|Det F
+
|Det F ||
|0.096
+
|0.096 ||
|0.094
+
|0.094  
 
|sr
 
|sr
 
|-
 
|-
|Det G
+
|Det G ||
|0.063
+
|0.063 ||
 
|0.061
 
|0.061
 
|sr
 
|sr
 
|-
 
|-
|Det H
+
|Det H ||
|0.033
+
|0.033 ||
 
|0.031
 
|0.031
 
|sr
 
|sr
 
|-
 
|-
|Det K
+
|Det K ||
|0.019
+
|0.019 ||
 
|0.018
 
|0.018
 
|sr
 
|sr
 
|-
 
|-
|Det I
+
|Det I ||
|0.011
+
|0.011 ||
 
|0.011
 
|0.011
 
|sr
 
|sr

Revision as of 03:38, 20 August 2012

Data on [math]MT target/D_2O[/math]:

Run with 2 Al sheets (2x0.678 mm) as bremsstrahlung converter w/o hardener. [math]E_e = 10.5 MeV[/math], Detector G(1/left).

D2OMTT.jpg

Bin-by-bin subtraction of the two timing spectra after normalization:

Subtr D2OMTT.jpg

Data on thick U-target and D2O from 8/13/2012:

Data (detector G(1,2)) were normalized to the gun trigger signal. Runs 3999(D2O) and 4001(no target), and 4011(thick U-target) and 4012(no target).

D2OMTT2.png

ThickUtarg.png


Data on thick U-target,D2O and H2O from 8/16/2012:

Data (detector F(1)) were normalized to the gun trigger signal. Runs 4097(D2O) and 4098(H2O), and 4011(thick U-target) and 4012(no target). [math]E_e = 10.5 MeV[/math]

D2OH2O.png

D2OMTT3.png

Data (detector H(2)) were normalized to the gun trigger signal. Runs 4100(thick U-taget) and 4099(MT target). [math]E_e = 10.5 MeV[/math]

ThickUtargMTtarget.png

Photon flux study.

The current we were running at (3 sheets of Al):

Photon fluxI.png

And when we asked the operator to cut the electron current twice, our photon flux monitor showed:

Photon fluxI half.png


Data on thick U-target,D2O and H2O from 8/17/2012:

Detector layout:

Detector layout2.png

Solid angles of subtended by the detectors and defined by point source:

Det E 0.106 0106 sr
Det M 0.118 0.119 sr
Det F 0.096 0.094 sr
Det G 0.063 0.061 sr
Det H 0.033 0.031 sr
Det K 0.019 0.018 sr
Det I 0.011 0.011 sr


Calibration of detector array efficiency via D2O photodisintegration (run 4111):

D20 eff calibr1.png

And the rest of the detectors:

D20 eff calibr2.png

Jitter of the PS detector and "Ilyusha" (placed on the beam) w.r.t. the gun trigger signal (run 4112):

Jitter.png

H2O calibration run (run 4112):

H20 eff calibr1.png

And the rest of the detectors:

H20 eff calibr2.png

Run with MT target (run 4113):

MT calibr1.png

And the rest of the detectors:

MT calibr2.png

Thick U-target data (run 4118):

R4118 1.png

And the rest of the detectors:

R4118 2.png

Neutron data bank (two production runs 4118 and 4119 added together). Coincidences between two PMTs for each detector are shown below.

Neutron bank.png