The Detector - Revision history

LaraD: /* Detector Geometry */

2021-11-04T10:18:50Z

Detector Geometry

Hgz: /* Assembly Steps */

2021-01-15T18:25:44Z

Assembly Steps

Hgz: /* Assembly Steps */

2021-01-15T18:24:47Z

Assembly Steps

Hgz: /* The Hexagonal */

2021-01-15T18:19:29Z

The Hexagonal

Hgz: /* Detector label */

2021-01-15T18:16:24Z

Detector label

Lnies at 08:48, 15 January 2021

2021-01-15T08:48:11Z

Lnies: /* The Original - Half */

2021-01-12T20:51:31Z

The Original - Half

Lnies: /* Detector specifications */

2021-01-12T20:49:57Z

Detector specifications

Lniesold at 19:45, 9 April 2020

2020-04-09T19:45:04Z

Lniesold at 19:04, 9 April 2020

2020-04-09T19:04:59Z

@@ Line 52: / Line 52: @@
 The original detector geometry is chosen to maximize the light collection efficiency while having a large area for a high muon count rate. This geometry was determined both experimentally <ref>L. Nies, ''Development of a SiPM-based readout-module for the characterization of various scintillation materials'', (University of Giessen, Bachelor Thesis, August 2017), [https://www.uni-giessen.de/fbz/fb07/fachgebiete/physik/institute/iipi/arbeitsgruppen/ag-brinkmann/forschung/theses/Nies_Lukas_BSc_Thesis_SiPM.pdf link]</ref> and theoretically <ref>S. Peter, ''Simulation of Cosmic Air Showers and Simulation Studies for the Geometry Optimization of a Scintillation Detector'', (University of Giessen, Bachelor Thesis, September 2019), [https://www.uni-giessen.de/fbz/fb07/fachgebiete/physik/institute/iipi/arbeitsgruppen/ag-brinkmann/forschung/theses/Bachelor_Sven_Peter.pdf link]</ref> to yield the best performance for a given detector area.
 === The Original - Half Size ===
-The U-BLOX chip can only assign accurate timestamps to a limited amount of events per second. A high muon flux can lead to a large dead time (time interval in which the detector is "blind" to events). With the Original type detector, we currently (HAT version 3.1) encounter a deadtime of 20% to 30%, depending on the threshold level. In practice, this means that we lose about one-third of all events. From an economic point of view, it makes sense to reduce the detector size to reduce the muon flux to reduce the dead time. Cutting the Original in half will help to make the detector more efficient (tests pending).
+The U-BLOX chip can only assign accurate timestamps to a limited amount of events per second. A high muon flux can lead to a large dead time (time interval in which the detector is "blind" to events). With the Original type detector, we currently (HAT version 3.1) encounter a deadtime of 20% to 30%, depending on the threshold level. In practice, this means that we lose about one-third of all events. From an economic point of view, it makes sense to reduce the detector size to reduce the muon flux to reduce the dead time. Cutting the Original in half makes the detector more efficient and results in a dead time factor of about 10%.
 === The Hexagonal ===
-Reusing the "veto" plastic scintillators from the TAPS detector, we have an excellent small and versatile detector for measuring cosmic muons. Significantly smaller than the standard type, the detector dead time imposes no problem.
+Reusing the "veto" plastic scintillators from the TAPS detector, we have an excellent small and versatile detector for measuring cosmic muons. Significantly smaller than the standard type, the detector dead time (factor of roughly 5%) imposes no problem.
 <gallery mode="packed-hover">

@@ Line 43: / Line 43: @@
 </gallery>
-We have a time lapse video of a full detector assembly run on YouTube [https://www.youtube.com/watch?v=7_O-eDJvdJU here].
+We have a '''time lapse video of a full detector assembly run''' on YouTube [https://www.youtube.com/watch?v=7_O-eDJvdJU here].
 = Detector Specifications =

@@ Line 42: / Line 42: @@
 Detector_Assembly_006.jpg|Layer of pond liner added
 </gallery>
 = Detector Specifications =

@@ Line 52: / Line 52: @@
 The U-BLOX chip can only assign accurate timestamps to a limited amount of events per second. A high muon flux can lead to a large dead time (time interval in which the detector is "blind" to events). With the Original type detector, we currently (HAT version 3.1) encounter a deadtime of 20% to 30%, depending on the threshold level. In practice, this means that we lose about one-third of all events. From an economic point of view, it makes sense to reduce the detector size to reduce the muon flux to reduce the dead time. Cutting the Original in half will help to make the detector more efficient (tests pending).
 === The Hexagonal ===
-Reusing the "veto" plastic scintillators from the TAPS detector, we have an excellent small and versatile detector for measuring cosmic muons. Significantly smaller than the Original type, detector dead time is not a problem.
+Reusing the "veto" plastic scintillators from the TAPS detector, we have an excellent small and versatile detector for measuring cosmic muons. Significantly smaller than the standard type, the detector dead time imposes no problem.
 <gallery mode="packed-hover">

@@ Line 61: / Line 61: @@
 == Detector label ==
-[[File:Detector_label.png|thumb|Label for the detectors.]]
+The detectors are labeled for proper documentation after the assembly. On the label, the following information about the detector is persisted:
 = References =
 <references />

@@ Line 43: / Line 43: @@
 </gallery>
-= Detector specifications =
+= Detector Specifications =
 Our detectors come in many different geometries and configurations.
-== Detector geometry ==
+== Detector Geometry ==
-Several different detector geometries can be build from the raw scintillator plates of type EJ-248M provided by our supplier [https://eljentechnology.com/products/plastic-scintillators Eljen]. The uncut scintillator plates have a dimension of 10x250x250 mm^3 (??).
+Several different detector geometries can be build from the raw scintillator plates of type EJ-248M provided by our supplier [https://eljentechnology.com/products/plastic-scintillators Eljen]. The uncut scintillator plates have a dimension of 10x250x250 mm^3. Additionally, we recycle former hexagonal "veto" plastic scintillators from the TAPS detector of the [https://wwwa2.kph.uni-mainz.de/a2detector-system/ A2 detector system]
-=== The original ===
+=== The Original ===
 [[File:scintillator_original_geometry.jpg|thumb|Geometry of the original detector type.]]
 The original detector geometry is chosen to maximize the light collection efficiency while having a large area for a high muon count rate. This geometry was determined both experimentally <ref>L. Nies, ''Development of a SiPM-based readout-module for the characterization of various scintillation materials'', (University of Giessen, Bachelor Thesis, August 2017), [https://www.uni-giessen.de/fbz/fb07/fachgebiete/physik/institute/iipi/arbeitsgruppen/ag-brinkmann/forschung/theses/Nies_Lukas_BSc_Thesis_SiPM.pdf link]</ref> and theoretically <ref>S. Peter, ''Simulation of Cosmic Air Showers and Simulation Studies for the Geometry Optimization of a Scintillation Detector'', (University of Giessen, Bachelor Thesis, September 2019), [https://www.uni-giessen.de/fbz/fb07/fachgebiete/physik/institute/iipi/arbeitsgruppen/ag-brinkmann/forschung/theses/Bachelor_Sven_Peter.pdf link]</ref> to yield the best performance for a given detector area.
-=== The small guy ===
+=== The Original - Half ===
-=== The left-over ===
+The U-BLOX chip can only assign accurate timestamps to a limited amount of events per second. A high muon flux can lead to a large dead time (time interval in which the detector is "blind" to events). With the Original type detector, we currently (HAT version 3.1) encounter a deadtime of 20% to 30%, depending on the threshold level. In practice, this means that we lose about one-third of all events. From an economic point of view, it makes sense to reduce the detector size to reduce the muon flux to reduce the dead time. Cutting the Original in half will help to make the detector more efficient (tests pending).
 == Detector label ==
 [[File:Detector_label.png|thumb|Label for the detectors.]]