Detector Operation and DAQ Setup - Revision history

Abdehait: /* Detector operation */

2013-10-27T22:46:18Z

Detector operation

Abdehait: /* Detector operation */

2013-10-27T22:38:29Z

Detector operation

Abdehait: /* Detector operation */

2013-10-27T22:22:48Z

Detector operation

Abdehait: /* Detector operation */

2013-10-27T22:19:51Z

Detector operation

Abdehait: /* Detector operation */

2013-10-27T22:09:14Z

Detector operation

Abdehait: /* Detector operation */

2013-10-23T19:20:59Z

Detector operation

Abdehait: /* Detector operation */

2013-10-23T19:15:13Z

Detector operation

Abdehait: /* Detector operation */

2013-10-23T18:06:59Z

Detector operation

Abdehait: /* Detector operation */

2013-10-21T00:54:37Z

Detector operation

Abdehait: /* Detector operation */

2013-10-21T00:45:00Z

Detector operation

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 =Detector operation=
-GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier to avoid the discharge that may damage the cards. If a particle signal needs more amplification, more cards will be added to the detector's cavity. This type of detectors has many applications that demands a specific number of cards to attain a successful application.
+GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier to avoid the discharge that may damage the cards. If a particle signal needs more amplification, more cards will be added to the detector's cavity. This type of detectors has many applications that demands a specific number of cards to attain a successful application. In our case, the detector's structure is based on a triple GEM preamplifiers; it allows the maximum voltage to 350 V to detect the the alpha particle and the fission fragment signal, its multiplication relationship to the applied voltage is shown in the figure below.
+Operating the detector occurs by providing a voltage to the HV-divider circuit that is connected to the detector's cards. Using  CAEN N470, a four channel digital power supply, allows to increase the voltage between the sides of the first GEM preamplifier to reach up to 350 V; then voltage gradually decreases to be the least on the sides of the third GEM preamplifier to reach 265V, as the circuit board is directly provided by a voltage of 2.8 kV. Another channel is responsible for increasing the voltage of the cathode; When the cathode voltage is 3.1 kV, it creates a drift voltage of 300V in the drift area.

← Older revision		Revision as of 22:38, 27 October 2013
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	GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier to avoid the discharge that may damage the cards. If a particle signal needs more amplification, more cards will be added to the detector's cavity. This type of detectors has many applications that demands a specific number of cards to attain a successful application.		GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier to avoid the discharge that may damage the cards. If a particle signal needs more amplification, more cards will be added to the detector's cavity. This type of detectors has many applications that demands a specific number of cards to attain a successful application.

−	In our case, the detector is based on a triple GEM ~~preamplifiers~~.	+	In our case, the detector is based on a triple GEM preamplifier structure.

← Older revision		Revision as of 22:22, 27 October 2013
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	GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier to avoid the discharge that may damage the cards. If a particle signal needs more amplification, more cards will be added to the detector's cavity. This type of detectors has many applications that demands a specific number of cards to attain a successful application.		GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier to avoid the discharge that may damage the cards. If a particle signal needs more amplification, more cards will be added to the detector's cavity. This type of detectors has many applications that demands a specific number of cards to attain a successful application.

−		+	In our case, the detector is based on a triple GEM preamplifiers.

← Older revision		Revision as of 22:19, 27 October 2013
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	=Detector operation=		=Detector operation=

−	GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier,	+	GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier to avoid the discharge that may damage the cards. If a particle signal needs more amplification, more cards will be added to the detector's cavity. This type of detectors has many applications that demands a specific number of cards to attain a successful application.

← Older revision		Revision as of 22:09, 27 October 2013
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	=Detector operation=		=Detector operation=
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		+	GEM detector operation determines the its signal multiplication, it may contain a one or more one preamplifier. Operating GEM detector mainly depends on the detector structure, The applied voltage on preamplifier's sides determines the its multiplication, so as the voltage increases the multiplication increases. However, there is a limit for voltage applied on each preamlifier,
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	Operating the detector occurs by providing a voltage to the HV-circuit that is connected to the detector components. Using CAEN N470, a four channel digital power supply, allows to increase the voltage between the sides of the first GEM preamplifier to reach up to 350 V; then voltage gradually decreases to be the least on the sides of the third GEM preamplifier to reach 265V, as the circuit board is directly provided by a voltage of 2.8 kV. Another channel is responsible for increasing the voltage of the cathode; When the cathode voltage is 3.1 kV, it creates a drift voltage of 300V in the drift area.		Operating the detector occurs by providing a voltage to the HV-circuit that is connected to the detector components. Using CAEN N470, a four channel digital power supply, allows to increase the voltage between the sides of the first GEM preamplifier to reach up to 350 V; then voltage gradually decreases to be the least on the sides of the third GEM preamplifier to reach 265V, as the circuit board is directly provided by a voltage of 2.8 kV. Another channel is responsible for increasing the voltage of the cathode; When the cathode voltage is 3.1 kV, it creates a drift voltage of 300V in the drift area.

← Older revision		Revision as of 19:20, 23 October 2013
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	=Detector operation=		=Detector operation=

−	Operating the detector occurs by providing a voltage to the HV-circuit that is connected to the detector components. Using CAEN N470, a four channel digital power supply, allows to increase the voltage between the sides of the first GEM preamplifier to reach up to 350 V; then voltage gradually decreases to be the least on the sides of the third GEM preamplifier to reach ~~245V~~, as the circuit board is directly provided by a voltage of 2.8 kV ~~from the power supply~~.Another channel ~~of the power supply~~ is ~~used to increase~~ the voltage of the ~~Cathode.~~ When the cathode voltage is 3.1 kV ~~to create~~ a drift voltage of 300V in the drift area.	+	Operating the detector occurs by providing a voltage to the HV-circuit that is connected to the detector components. Using CAEN N470, a four channel digital power supply, allows to increase the voltage between the sides of the first GEM preamplifier to reach up to 350 V; then voltage gradually decreases to be the least on the sides of the third GEM preamplifier to reach 265V, as the circuit board is directly provided by a voltage of 2.8 kV. Another channel is responsible for increasing the voltage of the cathode; When the cathode voltage is 3.1 kV, it creates a drift voltage of 300V in the drift area.

← Older revision		Revision as of 19:15, 23 October 2013
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	=Detector operation=		=Detector operation=

−	Operating the detector occurs by providing voltage to the ~~connected~~ HV-circuit the detector components ~~mentioned in the previous section~~. A CAEN N470 four channel power supply ~~is used for this purpose~~, ~~using a channel of the power supply~~ allows to increase the voltage ~~difference~~ between the ~~top and bottom side~~ of the first GEM preamplifier ~~reaches~~ up to 350 V then voltage gradually decreases to be the least ~~for~~ the third GEM preamplifier, as the circuit board is directly provided by a voltage of 2.8 kV from the power supply.Another channel of the power supply is used to increase the voltage of the Cathode. When the cathode voltage is 3.1 kV to create a drift voltage of 300V in the drift area.	+	Operating the detector occurs by providing a voltage to the HV-circuit that is connected to the detector components. Using CAEN N470, a four channel digital power supply, allows to increase the voltage between the sides of the first GEM preamplifier to reach up to 350 V; then voltage gradually decreases to be the least on the sides of the third GEM preamplifier to reach 245V, as the circuit board is directly provided by a voltage of 2.8 kV from the power supply.Another channel of the power supply is used to increase the voltage of the Cathode. When the cathode voltage is 3.1 kV to create a drift voltage of 300V in the drift area.

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 [[Image:Abdel_GEM_HV_distrib_6-19-09.png | 100 px]]
-The power supply is connected to a discharge protection circuit. CAEN N470 has a signal Lemo 00 input to activate a kill option automatically when a discharge signal occurs through the detector operation, the kill input is connected to the detector readout plate output,  as a discharge happens and it is wider than 15 us, kill option state turns true, so it will trip all the power supply channels.
+The power supply is connected to a discharge protection circuit. CAEN N470 has a signal Lemo 00 input to activate a kill option automatically when a discharge signal occurs through the detector operation, the kill input is connected to the detector charge collector output, so  as a discharge happens and its signal wider than 15 us, kill option state turns true, so it will trip all the power supply channels.
 The detector distinguish between the neutron signal from the other particles' signal by  analyzing the data as the detector's shutter is open and as it is close. GEM detector has the ability to detect most of the signal created by the particles if they cause ionization in the gas in a rate of 5 MHz, so the detector detects the signal of electrons, Bremsrahlung radiation, and neutrons. The neutrons' signal is distinguished in comparing two runs; one run records the detector signal as the detector's shutter is open, and the second run records its signal as the shutter is close. Within a common known time period, the difference between the two signal represents the neutrons signal.Testing the ability of the shutter to stop the fission fragments is confirmed by being able to stop the alpha particles produced by U-233 that is installed inside the detector and showing a difference in the Q-ADC spectrum between the shutter positions.

← Older revision		Revision as of 00:54, 21 October 2013
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	The power supply is connected to a discharge protection circuit. CAEN N470 has a signal Lemo 00 input to activate a kill option automatically when a discharge signal occurs through the detector operation, the kill input is connected to the detector readout plate output, as a discharge happens and it is wider than 15 us, kill option state turns true, so it will trip all the power supply channels.		The power supply is connected to a discharge protection circuit. CAEN N470 has a signal Lemo 00 input to activate a kill option automatically when a discharge signal occurs through the detector operation, the kill input is connected to the detector readout plate output, as a discharge happens and it is wider than 15 us, kill option state turns true, so it will trip all the power supply channels.

−	The detector distinguish between the neutron signal ~~and~~ the other particles' ~~signals~~ by ~~analysing~~ the data as the detector's shutter is open and as it is close. GEM detector has the ability to detect most of the signal created by the particles if they cause ionization in the gas in a rate of 5 MHz, so the detector detects the signal of ~~electron beam~~, Bremsrahlung radiation, and neutrons. ~~To confirm the~~ neutrons' signal two runs ~~is compared,~~ one run records the detector signal as the detector's shutter is open, and the ~~sencond~~ run records its signal as the shutter is close ~~within~~ a common known time period~~. The~~ difference between the two signal represents the neutrons signal.	+	The detector distinguish between the neutron signal from the other particles' signal by analyzing the data as the detector's shutter is open and as it is close. GEM detector has the ability to detect most of the signal created by the particles if they cause ionization in the gas in a rate of 5 MHz, so the detector detects the signal of electrons, Bremsrahlung radiation, and neutrons. The neutrons' signal is distinguished in comparing two runs; one run records the detector signal as the detector's shutter is open, and the second run records its signal as the shutter is close. Within a common known time period, the difference between the two signal represents the neutrons signal.Testing the ability of the shutter to stop the fission fragments is confirmed by being able to stop the alpha particles produced by U-233 that is installed inside the detector and showing a difference in the Q-ADC spectrum between the shutter positions.
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