Detector Description - Revision history

Abdehait: /* detector environment */

2014-03-27T02:56:42Z

detector environment

← Older revision		Revision as of 02:56, 27 March 2014
Line 86:		Line 86:
	\|}		\|}

	=~~detector~~ environment=		=Construction environment=

	Detectors are very sensitive devices, its components are connected to high voltage power supplies in a relatively thin chamber with Ar/CO2 90/10 gas mixture. As a result, the method of construction and maintaining demands a laminar flow hood that accommodates a clean environment from any source of dust in the atmosphere or any surrounding objects, Also the gloves are used to avoid any particle transfer to the detector's components through the steps of its construction or testing.		Detectors are very sensitive devices, its components are connected to high voltage power supplies in a relatively thin chamber with Ar/CO2 90/10 gas mixture. As a result, the method of construction and maintaining demands a laminar flow hood that accommodates a clean environment from any source of dust in the atmosphere or any surrounding objects, Also the gloves are used to avoid any particle transfer to the detector's components through the steps of its construction or testing.

Abdehait: /* High voltage divider circuit */

2014-03-27T02:56:04Z

High voltage divider circuit

← Older revision		Revision as of 02:56, 27 March 2014
Line 86:		Line 86:
	\|}		\|}

			=detector environment=

			Detectors are very sensitive devices, its components are connected to high voltage power supplies in a relatively thin chamber with Ar/CO2 90/10 gas mixture. As a result, the method of construction and maintaining demands a laminar flow hood that accommodates a clean environment from any source of dust in the atmosphere or any surrounding objects, Also the gloves are used to avoid any particle transfer to the detector's components through the steps of its construction or testing.

Foretony: /* High voltage divider circuit */

2013-12-02T22:09:26Z

High voltage divider circuit

← Older revision		Revision as of 22:09, 2 December 2013
Line 55:		Line 55:
	=High voltage divider circuit=		=High voltage divider circuit=

			A high voltage divider circuit is used to proportionally apply voltages on both faces of each GEM preamplifier as defined by the resistors used in the circuit. The first GEM preamplifier that an electron encounters as it traverses the detector is set to have the most negative voltage.
	The GEM preamplifiers are connected to a high voltage divider circuit that specifies the electron multiplication and supports (manages) their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector's properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was designed for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>		The GEM preamplifiers are connected to a high voltage divider circuit that specifies the electron multiplication and supports (manages) their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector's properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was designed for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>
	{\|		{\|

Abdehait: /* High voltage divider circuit */

2013-11-21T04:37:49Z

High voltage divider circuit

← Older revision		Revision as of 04:37, 21 November 2013
Line 55:		Line 55:
	=High voltage divider circuit=		=High voltage divider circuit=

	The GEM preamplifiers are connected to a high voltage divider circuit that specifies the electron multiplication and ~~support~~ (~~manage~~) their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was ~~design~~ for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>		The GEM preamplifiers are connected to a high voltage divider circuit that specifies the electron multiplication and supports (manages) their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector's properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was designed for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>
	{\|		{\|
	\|[[Image:GEM_HV_Dist_Net.jpg \| thumb \|alt=Example alt text\| Figure shows the HV-divider circuit.\| 100px]]		\|[[Image:GEM_HV_Dist_Net.jpg \| thumb \|alt=Example alt text\| Figure shows the HV-divider circuit.\| 100px]]
	\|}		\|}

	The HV circuit also provides the cathode with a voltage up to 3.6 kV to produce an electric field to drift most of the electrons ~~that~~ are primarily produced by ionization. It provides the GEM cards with voltage between the top and bottom of each one and allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.		The HV circuit also provides the cathode with a voltage up to 3.6 kV to produce an electric field to drift most of the electrons, which are primarily produced by ionization. It provides the GEM cards with voltage between the top and bottom of each one and allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.

	The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is detected by the oscilloscope since all the electrons are leaving the last GEM electrode toward the charge collector. The job of the high pass filter is to block all the low signal frequencies to provide a signal that can clearly be detected by a 50 ohm terminated oscilloscope.		The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is detected by the oscilloscope, since all the electrons are leaving the last GEM electrode toward the charge collector. The job of the high pass filter is to block all the low signal frequencies to provide a signal that can clearly be detected by a 50 ohm terminated oscilloscope.

Abdehait: /* High voltage divider circuit */

2013-11-21T03:20:05Z

High voltage divider circuit

← Older revision		Revision as of 03:20, 21 November 2013
Line 55:		Line 55:
	=High voltage divider circuit=		=High voltage divider circuit=

	The GEM preamplifiers are connected ~~with~~ high voltage divider circuit that specifies the electron multiplication and support (manage) their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was design for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>		The GEM preamplifiers are connected to a high voltage divider circuit that specifies the electron multiplication and support (manage) their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was design for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>
	{\|		{\|
	\|[[Image:GEM_HV_Dist_Net.jpg \| thumb \|alt=Example alt text\| Figure shows the HV-divider circuit.\| 100px]]		\|[[Image:GEM_HV_Dist_Net.jpg \| thumb \|alt=Example alt text\| Figure shows the HV-divider circuit.\| 100px]]
	\|}		\|}

	The HV circuit also provides the cathode with a voltage up to 3.6 kV to produce an electric field ~~drifts~~ most of the electrons that are primarily produced by ionization. It provides the GEM cards with voltage between the top and bottom of each one and allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.		The HV circuit also provides the cathode with a voltage up to 3.6 kV to produce an electric field to drift most of the electrons that are primarily produced by ionization. It provides the GEM cards with voltage between the top and bottom of each one and allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.

	The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is ~~detectoed~~ by the oscilloscope since all the electrons are leaving the last GEM electrode toward the charge collector. The job of the high pass filter is to block all the low signal frequencies to provide a signal that can clearly be detected by a 50 ohm terminated oscilloscope.		The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is detected by the oscilloscope since all the electrons are leaving the last GEM electrode toward the charge collector. The job of the high pass filter is to block all the low signal frequencies to provide a signal that can clearly be detected by a 50 ohm terminated oscilloscope.


	The table shows the voltage ~~measurements~~ between the sides of the GEM electrodes, and voltage between each side and the ground ~~using~~ the HV-voltage divider circuit shown above.		The table shows the measurements of voltage between the sides of the GEM electrodes, and voltage between each side and the ground that are provided by the HV-voltage divider circuit shown above.

	{\| border="1" cellpadding="4"		{\| border="1" cellpadding="4"

Abdehait: /* High voltage divider circuit */

2013-11-18T20:52:05Z

High voltage divider circuit

← Older revision		Revision as of 20:52, 18 November 2013
Line 62:		Line 62:
	The HV circuit also provides the cathode with a voltage up to 3.6 kV to produce an electric field drifts most of the electrons that are primarily produced by ionization. It provides the GEM cards with voltage between the top and bottom of each one and allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.		The HV circuit also provides the cathode with a voltage up to 3.6 kV to produce an electric field drifts most of the electrons that are primarily produced by ionization. It provides the GEM cards with voltage between the top and bottom of each one and allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.

	The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is detectoed by the oscilloscope since all the electrons are leaving the GEM ~~card~~ toward the charge collector. The job of the high pass filter is to block all the low signal frequencies to provide a signal that can clearly be detected by a 50 ohm terminated oscilloscope.		The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is detectoed by the oscilloscope since all the electrons are leaving the last GEM electrode toward the charge collector. The job of the high pass filter is to block all the low signal frequencies to provide a signal that can clearly be detected by a 50 ohm terminated oscilloscope.

Abdehait: /* High voltage divider circuit */

2013-11-18T20:40:35Z

High voltage divider circuit

← Older revision		Revision as of 20:40, 18 November 2013
Line 60:		Line 60:
	\|}		\|}

	The HV circuit provides the cathode with a voltage of 3.6 kV tp produce an electric field drifts most of the electrons that are primarily produced by ionization~~, also it~~ provides the GEM cards with voltage between the top and bottom of each one~~. The HV-circuit~~ allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.		The HV circuit also provides the cathode with a voltage up to 3.6 kV to produce an electric field drifts most of the electrons that are primarily produced by ionization. It provides the GEM cards with voltage between the top and bottom of each one and allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.

	The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is ~~observed~~ by the oscilloscope since all the electrons are leaving the GEM card toward the charge collector. The job of the high pass filter is block all the low signal frequencies to provide a ~~detector~~ signal that can be ~~seen clearly~~ by a 50 ohm terminated oscilloscope.		The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is detectoed by the oscilloscope since all the electrons are leaving the GEM card toward the charge collector. The job of the high pass filter is to block all the low signal frequencies to provide a signal that can clearly be detected by a 50 ohm terminated oscilloscope.

Abdehait: /* High voltage divider circuit */

2013-11-18T20:31:37Z

High voltage divider circuit

← Older revision		Revision as of 20:31, 18 November 2013
Line 55:		Line 55:
	=High voltage divider circuit=		=High voltage divider circuit=

	The GEM preamplifiers are connected with high voltage divider circuit that ~~determines~~ the electron multiplication and their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was design for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>		The GEM preamplifiers are connected with high voltage divider circuit that specifies the electron multiplication and support (manage) their transfer to the charge collector. As mentioned previously, The applied voltage on GEM cards determines all the detector properties, such as the order of electron multiplication, and the electron collection by the readout plate. A high voltage divider circuit was design for these purposes as shown in the figure below: <ref = "SergeHV"> Pinto, Serge . Gas Electron Multipliers Development of large area GEMS and spherical GEMS. Diss. Mathematisch-Naturwissenschaftliche Fakultät , 2011 </ref>
	{\|		{\|
	\|[[Image:GEM_HV_Dist_Net.jpg \| thumb \|alt=Example alt text\| Figure shows the HV-divider circuit.\| 100px]]		\|[[Image:GEM_HV_Dist_Net.jpg \| thumb \|alt=Example alt text\| Figure shows the HV-divider circuit.\| 100px]]
	\|}		\|}

	The HV circuit provides the cathode with a voltage of 3.6 kV ~~which will produces~~ an electric field drifts most of the electrons that are primarily produced by ionization, ~~and~~ also provides the GEM cards with voltage between the top and bottom of each one. The HV-circuit allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.		The HV circuit provides the cathode with a voltage of 3.6 kV tp produce an electric field drifts most of the electrons that are primarily produced by ionization, also it provides the GEM cards with voltage between the top and bottom of each one. The HV-circuit allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.

	The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is observed by the oscilloscope since all the electrons are leaving the GEM card toward the charge collector. The job of the high pass filter is block all the low signal frequencies to provide a detector signal that can be seen clearly by a 50 ohm terminated oscilloscope.		The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is observed by the oscilloscope since all the electrons are leaving the GEM card toward the charge collector. The job of the high pass filter is block all the low signal frequencies to provide a detector signal that can be seen clearly by a 50 ohm terminated oscilloscope.

Abdehait: /* High voltage divider circuit */

2013-11-16T21:26:57Z

High voltage divider circuit

← Older revision		Revision as of 21:26, 16 November 2013
Line 62:		Line 62:
	The HV circuit provides the cathode with a voltage of 3.6 kV which will produces an electric field drifts most of the electrons that are primarily produced by ionization, and also provides the GEM cards with voltage between the top and bottom of each one. The HV-circuit allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.		The HV circuit provides the cathode with a voltage of 3.6 kV which will produces an electric field drifts most of the electrons that are primarily produced by ionization, and also provides the GEM cards with voltage between the top and bottom of each one. The HV-circuit allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.

	The circuit ~~is provided~~ through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by ~~connecting~~ the ~~oscilloscope to~~ bottom side of the third GEM card~~, which~~ is ~~connected to high pass filter~~. The job of the high pass filter		The circuit provides a trigger signal through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by a high pass filter that is in contact with the bottom side of the third GEM card; a positive signal is observed by the oscilloscope since all the electrons are leaving the GEM card toward the charge collector. The job of the high pass filter is block all the low signal frequencies to provide a detector signal that can be seen clearly by a 50 ohm terminated oscilloscope.
	is block all the low ~~frequecies, and~~ to provide a detector signal that can be seen clearly on 50 ohm ~~tertminated~~ oscilloscope ~~display input~~.

Abdehait: /* High voltage divider circuit */

2013-11-16T21:10:53Z

High voltage divider circuit

← Older revision		Revision as of 21:10, 16 November 2013
Line 60:		Line 60:
	\|}		\|}

	The HV circuit provides the cathode with a voltage of 3.6 kV which will produces an electric field drifts most of the electrons that are primarily produced by ionization, and also provides the GEM cards with voltage between the top and bottom of each one. The HV-circuit allows the voltage to gradually ~~decrease~~ to reach the minimum value between ~~the sides of~~ the third GEM ~~card~~, ~~which has an advantage~~ of ~~providing~~ a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.		The HV circuit provides the cathode with a voltage of 3.6 kV which will produces an electric field drifts most of the electrons that are primarily produced by ionization, and also provides the GEM cards with voltage between the top and bottom of each one. The HV-circuit allows the voltage to decrease gradually to reach the minimum value between the third GEM's sides. So, the main advantages of the circuit design are to provide a voltage for electron multiplication, and to guide most of the drift electrons to the charge collector.

			The circuit is provided through a high pass filter connected to the third GEM electrode. One of the ways to get the detector signal is by connecting the oscilloscope to bottom side of the third GEM card, which is connected to high pass filter. The job of the high pass filter
			is block all the low frequecies, and to provide a detector signal that can be seen clearly on 50 ohm tertminated oscilloscope display input.


	The table shows the voltage measurements between the sides of the GEM electrodes, and voltage between each side and the ground using the HV-voltage divider circuit shown above.		The table shows the voltage measurements between the sides of the GEM electrodes, and voltage between each side and the ground using the HV-voltage divider circuit shown above.