FSU Fox's Lab Wiki - User contributions [en]

Clarion2

2022-09-14T14:02:06Z

Timgray:

[[File:Image of Clarion2.png|600px|thumb|right| Image of Clarion2, photo by Tim.]]
= Introduction =
Clarion2 is the successor of [https://doi.org/10.1016/S0168-9002(00)00159-5 Clarion] ('''CL'''over '''A'''rray
for '''R'''adioactive '''ION''' beam). It is a 4π gamma ray detectors array with 16 High-Purity Germanium (HPGe) clover detectors. Each HPGe detector is shied with a BGO (Bismuth Germanate <nowiki>[</nowiki>Bi4Ge3O12<nowiki>]</nowiki>) shield.

Each clover detector has 4 crystals, color-coded as Red, Blue, Green, and Black. Here is the angular map for all 16 clovers. Further details of the array can be found [https://doi.org/10.1016/j.nima.2022.167392 here] or [https://arxiv.org/abs/2208.05449 here].

[[File:Clarion2 angular map.png|400px|thumb|none|Clarion2 angular map. The purple dot is the center of each clover.]]

{{Notice|Solid work model needed}}

== HPGe Clover Detector ==
The detectors are produced by EURISYS Measure, now CANBERRA, owned by MIRION Technologies <nowiki>[</nowiki>[https://www.canberra.com/fr/produits/detectors/x-ray-detector-history.html 1]<nowiki>]</nowiki>. An approximate 3.3 kg clover detector consists of 4 coaxial crystals (dimension 50 mm in diameter, 80 mm in length) <nowiki>[</nowiki>[https://www.mirion.com/products/clover-detectors-four-coaxial-germanium-detectors Mirion webpage]<nowiki>]</nowiki>.

=== Typical photon-peak efficiency curve ===
[[File:CLARION2 efficiency curve.png|thumb|right|600px|CLARION2 efficiency curve by Tim Gray. The data points are from experimental measurments.]]

The absolute photo-peak efficiency at 1332 keV is ~1.8%.

The equation for the absolute efficiency curve is

<span style="font-size:120%">
<math> \epsilon(e_{\gamma} \text{[keV]}) = \epsilon_0 \exp^{\left( \left(A+Bx + Cx^2\right)^{-G} + \left(D+E y +F y^2\right)^{-G} \right)^{-1/G}}, x = \ln\left(\frac{e_\gamma}{100}\right), y = \ln\left(\frac{e_\gamma}{1000}\right)</math>
</span>

<math> \epsilon_0 = 0.0037679 </math>

<math> A = 13.6858 </math>

<math> B = 1.4055 </math>

<math> C = 0.000 </math>

<math> D = 3.8942 </math>

<math> E = -2.4073 </math>

<math> F = 0.0629 </math>

<math> G = 0.5000 </math>

=== GEANT4 simulation ===
The performance of a single clover detector was simulated using GEANT4. The source code can be downloaded from https://github.com/goluckyryan/HPGeClover.

[[File:GEAN4 simulation of 152Eu.png|600px|thumb|none|GEAN4 simulation of 152Eu]]

== Trinity ==
[[File:Front view of TRINITY.png|400px|thumb|right|Front view of TRINITY, photo by Vandana.]]
Trinity is formed by GAGG ('''G'''adolinium '''A'''luminium '''G'''allium '''G'''arnet) scintillator crystals. It is located in the target chamber of the Clarion2. The GAGG crystals are arranged in 5 rings, covering 7-54 degrees. Currently only two rings are implemented, which cover 14-24 and 34-44 degrees respectively.

[[File:A single GAGG detector.png|400px|thumb|none|A single GAGG detector]]

== Neutron Shield ==

In 2022 April, a set of neutron shields surrounded Clarion2 for shielding slow neutrons.

= Clarion2 private network =

The Clarion2 uses its own private network. The network structure is illustrated as following:

Fox's Lab network --- clarion2(Mac, gateway) ---- 10 Gb switch
+--------- clarion2 DAQ
+--------- LN2 control, HV control

= DAQ =

The DAQ system is fully digitized with [[Pixie16 digitizer]]. The signals from the Clover and BGO are directly fed to the Pixie16 digitizers. The data processing library developed by Tim Gray can be found at https://github.com/belmakier/libpixie and https://github.com/belmakier/libClarionTrinity .

The Plx driver was modified from the Broadcom driver. The PixieSDK (legacy) was also modified.

{{Notice | Detail of operation is needed.}}

= LN2 cooling system =
The liquid Nitrogen (LN2) filling system developed by Mitch Allmond (Oak Ridge) is hosted on the LN2-control computer under the account "ln@ln02".
== ln@ln02 Directory==
Several important directories for using the LN2 system are listed below.
=== /gln ===
/gln is the most important directory, it is where the control program is located and for most problems is where you will need to go
==== gln_ui ====
gln_ui is the user interface to issue commands to the fill program
<div class="toccolours mw-collapsible mw-collapsed">
<div style="line-height:1.6;">gln_ui Commands</div>
<div class="mw-collapsible-content">
--------------------------------------
;<code> fill <det-list> </code>
: fill detectors <det-list> now
;<code> fill <det-list> after <number-of-minutes> </code> (or <hours<nowiki>:</nowiki>minutes>)
: wait to fill detectors <det-list> by time <hours:minutes>
;<code> cool <det-list> </code>
: cool down detectors
;<code> ton <det-list> </code>
: turn on (enable fill for) detectors
;<code>tof <det-list> </code>
: turn off (disable fill for) detectors
;<code> con det#[.temp#] </code>
: turn on checking of detector temps
;<code> cof det#[.temp#] </code>
: turn off checking of detector temps
;<code> abort </code>
:abort and disable all fills

;<code> load [fig-file-name] </code>
: load configuration from fig-file-name (default = gln.fig)
;<code> exit-master </code>
: exit gln_master process
{{Warning | This will stop the fill system}}
;<code> clr </code>
: clear all errors for entire system
{{Notice | Proper usage is to clear individual detectors}}
;<code> clrd <det-list> </code>
: clear errors for specific detectors
;<code> clrs </code>
: clear all slot errors
;<code> clrm </code>
: clear all manifold errors
;<code> d </code>
: display status
;<code> dt </code>
: display times of all detectors & manifolds (formatted dates and times)
;<code> dts </code>
: display times of all detectors & manifolds (in seconds)
;<code> dc </code>
: display configuration (valve and ADC IDs, etc)
;<code> mon </code>
: enter monitor mode; type control-C to exit
;<code> quit </code>
: exit gln_ui process
;<code> hvln </code>
: useless command for backward compatibility
;<code> clear </code>
: clear screen
;<code> ? </code> or <code> help </code>
: help text for commands
'''Low Level Commands'''
;<code> radc <#> </code>
: read ADC number <#>
;<code> opv <#> </code> <code> clv <#> </code>
: open and close valves
{{Warning | Be careful with this}}
-------------------------------------- </div></div>

http://clarion02.physics.fsu.edu/~clarion02/index.html

= List of Collaborators =
[[File:A picture of Clarion2 collaborators.png|500px|thumb|right|From left: James Christie, Ram Yadav, Mitch Allmond, Tim Gray, photo taken by Vandana]]
The list may not be completed.
{| class="wikitable"
! Name || Affiliation
|-
| Mitch Allmond|| ORNL
|-
| Tim Gray || ORNL
|-
| Toby King || ORNL
|-
| Ingo Wiedenhoever || FSU
|-
| Sam Tabor || FSU
|-
| Vandana Tripathi || FSU
|-
| Lagy Baby || FSU
|-
|Soumik Bhattacharya || FSU
|-
| Caleb Benetti || FSU
|-
| Catur Wibisono || FSU
|-
| Samuel Ajayi || FSU
|-
| Ryan Tang || FSU
|-
| Ram Yadav || South Carolina State University
|-
| James Christie || UTK
|}

= Contact =
* Mitch Allmond mailto:allmondjm@ornl.gov
* Tim Gray mailto:graytj@ornl.gov
* Vandan Tripathi mailto:vtripath@fsu.edu

Clarion2

2022-08-12T13:37:04Z

Timgray:

[[File:Image of Clarion2.png|600px|thumb|right| Image of Clarion2, photo by Tim.]]
= Introduction =
Clarion2 is the successor of [https://doi.org/10.1016/S0168-9002(00)00159-5 Clarion] ('''CL'''over '''A'''rray
for '''R'''adioactive '''ION''' beam). It is a 4π gamma ray detectors array with 16 High-Purity Germanium (HPGe) clover detectors. Each HPGe detector is shied with a BGO (Bismuth Germanate <nowiki>[</nowiki>Bi4Ge3O12<nowiki>]</nowiki>) shield.

Each clover detector has 4 crystals, color-coded as Red, Blue, Green, and Black. Here is the angular map for all 16 clovers. Further details of the array can be found [https://arxiv.org/abs/2208.05449 here].

[[File:Clarion2 angular map.png|400px|thumb|none|Clarion2 angular map. The purple dot is the center of each clover.]]

{{Notice|Solid work model needed}}

== HPGe Clover Detector ==
The detectors are produced by EURISYS Measure, now CANBERRA, owned by MIRION Technologies <nowiki>[</nowiki>[https://www.canberra.com/fr/produits/detectors/x-ray-detector-history.html 1]<nowiki>]</nowiki>. An approximate 3.3 kg clover detector consists of 4 coaxial crystals (dimension 50 mm in diameter, 80 mm in length) <nowiki>[</nowiki>[https://www.mirion.com/products/clover-detectors-four-coaxial-germanium-detectors Mirion webpage]<nowiki>]</nowiki>.

=== Typical photon-peak efficiency curve ===
[[File:CLARION2 efficiency curve.png|thumb|right|600px|CLARION2 efficiency curve by Tim Gray. The data points are from experimental measurments.]]

The absolute photo-peak efficiency at 1332 keV is ~1.8%.

The equation for the absolute efficiency curve is

<span style="font-size:120%">
<math> \epsilon(e_{\gamma} \text{[keV]}) = \epsilon_0 \exp^{\left( \left(A+Bx + Cx^2\right)^{-G} + \left(D+E y +F y^2\right)^{-G} \right)^{-1/G}}, x = \ln\left(\frac{e_\gamma}{100}\right), y = \ln\left(\frac{e_\gamma}{1000}\right)</math>
</span>

<math> \epsilon_0 = 0.0037679 </math>

<math> A = 13.6858 </math>

<math> B = 1.4055 </math>

<math> C = 0.000 </math>

<math> D = 3.8942 </math>

<math> E = -2.4073 </math>

<math> F = 0.0629 </math>

<math> G = 0.5000 </math>

=== GEANT4 simulation ===
The performance of a single clover detector was simulated using GEANT4. The source code can be downloaded from https://github.com/goluckyryan/HPGeClover.

[[File:GEAN4 simulation of 152Eu.png|600px|thumb|none|GEAN4 simulation of 152Eu]]

== Trinity ==
[[File:Front view of TRINITY.png|400px|thumb|right|Front view of TRINITY, photo by Vandana.]]
Trinity is formed by GAGG ('''G'''adolinium '''A'''luminium '''G'''allium '''G'''arnet) scintillator crystals. It is located in the target chamber of the Clarion2. The GAGG crystals are arranged in 5 rings, covering 7-54 degrees. Currently only two rings are implemented, which cover 14-24 and 34-44 degrees respectively.

[[File:A single GAGG detector.png|400px|thumb|none|A single GAGG detector]]

== Neutron Shield ==

In 2022 April, a set of neutron shields surrounded Clarion2 for shielding slow neutrons.

= Clarion2 private network =

The Clarion2 uses its own private network. The network structure is illustrated as following:

Fox's Lab network --- clarion2(Mac, gateway) ---- 10 Gb switch
+--------- clarion2 DAQ
+--------- LN2 control, HV control

= DAQ =

The DAQ system is fully digitized with [[Pixie16 digitizer]]. The signals from the Clover and BGO are directly fed to the Pixie16 digitizers. The data processing library developed by Tim Gray can be found at https://github.com/belmakier/libpixie and https://github.com/belmakier/libClarionTrinity .

The Plx driver was modified from the Broadcom driver. The PixieSDK (legacy) was also modified.

{{Notice | Detail of operation is needed.}}

= LN2 cooling system =
The liquid Nitrogen (LN2) filling system developed by Mitch Allmond (Oak Ridge) is hosted on the LN2-control computer under the account "ln@ln02".
== ln@ln02 Directory==
Several important directories for using the LN2 system are listed below.
=== /gln ===
/gln is the most important directory, it is where the control program is located and for most problems is where you will need to go
==== gln_ui ====
gln_ui is the user interface to issue commands to the fill program
<div class="toccolours mw-collapsible mw-collapsed">
<div style="line-height:1.6;">gln_ui Commands</div>
<div class="mw-collapsible-content">
--------------------------------------
;<code> fill <det-list> </code>
: fill detectors <det-list> now
;<code> fill <det-list> after <number-of-minutes> </code> (or <hours<nowiki>:</nowiki>minutes>)
: wait to fill detectors <det-list> by time <hours:minutes>
;<code> cool <det-list> </code>
: cool down detectors
;<code> ton <det-list> </code>
: turn on (enable fill for) detectors
;<code>tof <det-list> </code>
: turn off (disable fill for) detectors
;<code> con det#[.temp#] </code>
: turn on checking of detector temps
;<code> cof det#[.temp#] </code>
: turn off checking of detector temps
;<code> abort </code>
:abort and disable all fills

;<code> load [fig-file-name] </code>
: load configuration from fig-file-name (default = gln.fig)
;<code> exit-master </code>
: exit gln_master process
{{Warning | This will stop the fill system}}
;<code> clr </code>
: clear all errors for entire system
{{Notice | Proper usage is to clear individual detectors}}
;<code> clrd <det-list> </code>
: clear errors for specific detectors
;<code> clrs </code>
: clear all slot errors
;<code> clrm </code>
: clear all manifold errors
;<code> d </code>
: display status
;<code> dt </code>
: display times of all detectors & manifolds (formatted dates and times)
;<code> dts </code>
: display times of all detectors & manifolds (in seconds)
;<code> dc </code>
: display configuration (valve and ADC IDs, etc)
;<code> mon </code>
: enter monitor mode; type control-C to exit
;<code> quit </code>
: exit gln_ui process
;<code> hvln </code>
: useless command for backward compatibility
;<code> clear </code>
: clear screen
;<code> ? </code> or <code> help </code>
: help text for commands
'''Low Level Commands'''
;<code> radc <#> </code>
: read ADC number <#>
;<code> opv <#> </code> <code> clv <#> </code>
: open and close valves
{{Warning | Be careful with this}}
-------------------------------------- </div></div>

http://clarion02.physics.fsu.edu/~clarion02/index.html

= List of Collaborators =
[[File:A picture of Clarion2 collaborators.png|500px|thumb|right|From left: James Christie, Ram Yadav, Mitch Allmond, Tim Gray, photo taken by Vandana]]
The list may not be completed.
{| class="wikitable"
! Name || Affiliation
|-
| Mitch Allmond|| ORNL
|-
| Tim Gray || ORNL
|-
| Toby King || ORNL
|-
| Ingo Wiedenhoever || FSU
|-
| Sam Tabor || FSU
|-
| Vandana Tripathi || FSU
|-
| Lagy Baby || FSU
|-
|Soumik Bhattacharya || FSU
|-
| Caleb Benetti || FSU
|-
| Catur Wibisono || FSU
|-
| Samuel Ajayi || FSU
|-
| Ryan Tang || FSU
|-
| Ram Yadav || South Carolina State University
|-
| James Christie || UTK
|}

= Contact =
* Mitch Allmond mailto:allmondjm@ornl.gov
* Tim Gray mailto:graytj@ornl.gov
* Vandan Tripathi mailto:vtripath@fsu.edu