Difference between revisions of "PhotoFiss 3-8-11"

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(Created page with '[https://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back] =TDC Map= {| border="1" |cellpadding="20" cellspacing="0 |- | TDC Chan || Detector…')
 
 
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[https://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]
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[https://wiki.iac.isu.edu/index.php/Feb_PhotFisRun_44MeV_March_2011 Go Back]
  
 
=TDC Map=
 
=TDC Map=
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=Scalers=
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{| border="1"  |cellpadding="20" cellspacing="0
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|-
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| TDC Chan || Detector
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|-
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| 2|| Sofiia-scaler (neutron detector Beam Right down)
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|-
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| 4|| Natali-scaler  (neutron detector Beam Left down)
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|-
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| 5|| Irina-scaler  (neutron detector Beam left center)
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|-
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| 6|| Polina-scaler  (neutron detector Beam left top)
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|}
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=Runs=
 
=Runs=
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{| border="1"  |cellpadding="20" cellspacing="0  
 
{| border="1"  |cellpadding="20" cellspacing="0  
 
|-
 
|-
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| Date || Run Number || Comment
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| Date || Run Number || Comment || Run Time
 
|-
 
|-
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| 3/7/11 || 1905 || Rad out, sweep magnet out, no physics target, looking at background into shielded cell
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| 3/8/11 || 1938 || Beam down, D2O target, radiator in || 25 minutes
 
|-
 
|-
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| 3/7/11 || 1906 || Adjusted pulse start width
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| 3/8/11 || 1939 || Beam down, D2O target, radiator in  || 10 minutes
 
|-
 
|-
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| 3/7/11 || 1907 || Moved gamma peak on TDC spectrum to ~100ns
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| 3/8/11 || 1940 || Beam down, D2O target, radiator in  || 60 minutes
 
|-
 
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| 3/7/11 || 1908 || Longer run to get more data
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| 3/8/11 || 1941 || Beam up, D2O target, radiator in  || 75 minutes
 
|-
 
|-
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| 3/7/11 || 1909 || Moved pair spec and ps sweep magnet centered on off axis beam
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| 3/8/11 || 1944 || Beam down, D2O target, radiator in  || 55 minutes
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|-
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| 3/8/11 || 1945 || Beam up, D2O target, radiator in  || 75 minutes
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|-
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| 3/8/11 || 1946 || Beam up, D2O target, radiator out  || 15 minutes
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|-
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| 3/8/11 || 1947 || Beam up, H2O target, radiator in  || 15 minutes
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|-
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| 3/8/11 || 1948 || Beam down, H2O target, radiator in  || 15 minutes
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|-
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| 3/8/11 || 1949 || Beam down, DU target, radiator in  || 20 minutes
 
|}
 
|}
  
 
=Scope Pictures=
 
=Scope Pictures=
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The following scope pictures have beam parameters of 25 MeV beam energy, 0.5 A current and a 2 ns pulse width.
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[[File:3-8-11.png | 200 px]]
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Above is a scope picture of the analog signal from the neutron detector Natali inside the gun pulse start signal.  The purple signal is the NIM pulse from the level translator (Model PS726).
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[[File:3-8-11_4.png | 200 px]]
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Above is a scope picture of TDC start (light blue), stop out from the discriminator (Ortec CF8000)(dark blue), and the gun pulse (green).  The TDC is operated between the fall of the start and the rise of the stop (100ns).
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[[File:3-8-11_5.png | 200 px]]
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Above has the gun pulse in green and the start trigger for the VME crate as light blue.
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[[File:3-8-11_6.png | 200 px]]
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Above is a closeup of the trigger start for the VME crate.
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[[File:3-8-11_7.png | 200 px]]
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[[File:3-8-11_8.png | 200 px]]
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Above are scope pictures of Natali double pulsing.  The purple trace is the NIM output of the level translator.  The yellow trace is the analog signal from Natali out of the back of the constant fraction discriminator (Ortec CF8000).  Natali was operating at a high voltage of -1800 V and a threshold of 203 mV.
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=Lab Book=
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[[File:March8.pdf]]
  
−
[https://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]
+
[https://wiki.iac.isu.edu/index.php/Feb_PhotFisRun_44MeV_March_2011 Go Back]

Latest revision as of 16:53, 1 April 2011

Go Back

TDC Map

TDC Chan Detector
1 Event Trigger
12 Sofiia (neutron detector Beam Right down)
13 Natali (neutron detector Beam Left down)
14 Irina (neutron detector Beam left center)
15 Polina (neutron detector Beam left top)

Scalers

TDC Chan Detector
2 Sofiia-scaler (neutron detector Beam Right down)
4 Natali-scaler (neutron detector Beam Left down)
5 Irina-scaler (neutron detector Beam left center)
6 Polina-scaler (neutron detector Beam left top)


Runs

Date Run Number Comment Run Time
3/8/11 1938 Beam down, D2O target, radiator in 25 minutes
3/8/11 1939 Beam down, D2O target, radiator in 10 minutes
3/8/11 1940 Beam down, D2O target, radiator in 60 minutes
3/8/11 1941 Beam up, D2O target, radiator in 75 minutes
3/8/11 1944 Beam down, D2O target, radiator in 55 minutes
3/8/11 1945 Beam up, D2O target, radiator in 75 minutes
3/8/11 1946 Beam up, D2O target, radiator out 15 minutes
3/8/11 1947 Beam up, H2O target, radiator in 15 minutes
3/8/11 1948 Beam down, H2O target, radiator in 15 minutes
3/8/11 1949 Beam down, DU target, radiator in 20 minutes

Scope Pictures

The following scope pictures have beam parameters of 25 MeV beam energy, 0.5 A current and a 2 ns pulse width.

3-8-11.png

Above is a scope picture of the analog signal from the neutron detector Natali inside the gun pulse start signal. The purple signal is the NIM pulse from the level translator (Model PS726).

3-8-11 4.png

Above is a scope picture of TDC start (light blue), stop out from the discriminator (Ortec CF8000)(dark blue), and the gun pulse (green). The TDC is operated between the fall of the start and the rise of the stop (100ns).

3-8-11 5.png

Above has the gun pulse in green and the start trigger for the VME crate as light blue.

3-8-11 6.png

Above is a closeup of the trigger start for the VME crate.

3-8-11 7.png 3-8-11 8.png

Above are scope pictures of Natali double pulsing. The purple trace is the NIM output of the level translator. The yellow trace is the analog signal from Natali out of the back of the constant fraction discriminator (Ortec CF8000). Natali was operating at a high voltage of -1800 V and a threshold of 203 mV.

Lab Book

File:March8.pdf

Go Back

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