Jie's Experimental Method - Revision history

Jonesrt: Jie's Methods and Materials moved to Jie's Experimental Method

2008-01-31T22:03:16Z

Jie's Methods and Materials moved to Jie's Experimental Method

Jie Zhao at 19:57, 31 January 2008

2008-01-31T19:57:17Z

Jie Zhao at 19:55, 31 January 2008

2008-01-31T19:55:20Z

Jie Zhao: Methods and Materials moved to Jie's Methods and Materials

2008-01-25T18:30:15Z

Methods and Materials moved to Jie's Methods and Materials

Jie Zhao at 19:00, 20 December 2007

2007-12-20T19:00:33Z

Jie Zhao at 18:56, 20 December 2007

2007-12-20T18:56:44Z

Jie Zhao at 18:51, 20 December 2007

2007-12-20T18:51:06Z

New page

A darkened denclosed box was built to house the SiPM. Since electromagnetic radiaition(in the form of heat) can fire the SiPM very efficiently , the box had to eliminate as much ambient light as possible. It consisited of a 3' x 1' x 1' box, made of wood that was painted black. On one end of the box, there was an LED and pulser circuit for the purpose of calibrating the SiPM. On the other end, the SiPM was mounted on a metal arm with heat conductive material to make sure that the temperature of the arm matched the temperature of the SiPM. Attached to the metal arm was a temperature controller. The temperature controler was simply a heat sink that was receiving constant feedback from a thermometer on the metal arm. If the temperature was too low, then the thermometer would sned a signal back to the heat sink, which would then heat up the arm and also, the SiPM.

← Older revision		Revision as of 19:57, 31 January 2008
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	The data was recorded in a server for further analysis.		The data was recorded in a server for further analysis.

−	[[~~Counting individual photons~~\|Back]]	+	[[My research paper\|Back]]

@@ Line 1: / Line 1: @@
-A darkened denclosed box was built to house the SiPM. Since electromagnetic radiaition(in the form of heat) can fire the SiPM very efficiently , the box had to eliminate as much ambient light as possible. It consisited of a 3' x 1' x 1' box, made of wood that was painted black. On one end of the box, there was an LED and pulser circuit for the purpose of calibrating the SiPM. On the other end, the SiPM was mounted on a metal arm with heat conductive material to make sure that the temperature of the arm matched the temperature of the SiPM. Attached to the metal arm was a temperature controller. The temperature controler was simply a heat sink that was receiving constant feedback from a thermometer on the metal arm. If the temperature was too low, then the thermometer would sned a signal back to the heat sink, which would then heat up the arm and also, the SiPM. The signal from the SiPM was then connected to an osciloscope which could display the results of the experiment. Since the experiment was very sensitive to ambient light, wires (from the power supplies, signals from the thermometer and SiPM... etc.) had to be connected to a ______________. This ____________ was built right into the walls of the box to prevent any ambient light from slipping through the cracks.
+A darkened enclosed box was built to house the SiPM. Since electromagnetic radiation(in the form of heat) can fire the SiPM very efficiently , the box had to eliminate as much ambient light as possible. It consisted of a 3' x 1' x 1' box, made of wood that was painted black. On one end of the box, there was an LED and pulser circuit for the purpose of calibrating the SiPM. On the other end, the SiPM was mounted on a metal arm with heat conductive material to make sure that the temperature of the arm matched the temperature of the SiPM. Attached to the metal arm was a temperature controller. The temperature controller consisted of a heat sink that was receiving constant feedback from a thermometer on the metal arm. If the temperature was too low, then the thermometer would send a signal back to the heat sink. This signal would cause the heat sink to heat up, causing the arm as well as the SiPM to get warmer. The signal from the SiPM was amplified by an amplifier that was mounted right next to the SiPM on the arm which was then connected to an oscilloscope which could display the results of the experiment.
-~~Calibration~~
+There was a large amount of electromagnetic interference in the wires. This was due to the many power wires that crisscrossed the device. The interference was especially troubling in the wire between the SiPM and the amplifier. Any slight interference would be magnified by the amplifier with the actual signal, causing the signal to be extremely muffled. To combat this, grounded shielding was placed in the wires inbetween the SiPM and the amplifier and many other electrical wires, such as the power supply wires were also grounded.
 [[Counting individual photons|Back]]

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 ~~Calibration~~
+During data collection, the Oscilloscope was conneted to a server with data collection software. The rate at which the data was colleced was one waveform per second. Several trials were run at different temperatures ~~Temperatures~~ Each trial ran for at least ___ house and consisted of ___Data___ Data.
 [[Counting individual photons|Back]]

← Older revision		Revision as of 18:56, 20 December 2007
Line 1:		Line 1:
−	A darkened denclosed box was built to house the SiPM. Since electromagnetic radiaition(in the form of heat) can fire the SiPM very efficiently , the box had to eliminate as much ambient light as possible. It consisited of a 3' x 1' x 1' box, made of wood that was painted black. On one end of the box, there was an LED and pulser circuit for the purpose of calibrating the SiPM. On the other end, the SiPM was mounted on a metal arm with heat conductive material to make sure that the temperature of the arm matched the temperature of the SiPM. Attached to the metal arm was a temperature controller. The temperature controler was simply a heat sink that was receiving constant feedback from a thermometer on the metal arm. If the temperature was too low, then the thermometer would sned a signal back to the heat sink, which would then heat up the arm and also, the SiPM.	+	A darkened denclosed box was built to house the SiPM. Since electromagnetic radiaition(in the form of heat) can fire the SiPM very efficiently , the box had to eliminate as much ambient light as possible. It consisited of a 3' x 1' x 1' box, made of wood that was painted black. On one end of the box, there was an LED and pulser circuit for the purpose of calibrating the SiPM. On the other end, the SiPM was mounted on a metal arm with heat conductive material to make sure that the temperature of the arm matched the temperature of the SiPM. Attached to the metal arm was a temperature controller. The temperature controler was simply a heat sink that was receiving constant feedback from a thermometer on the metal arm. If the temperature was too low, then the thermometer would sned a signal back to the heat sink, which would then heat up the arm and also, the SiPM. The signal from the SiPM was then connected to an osciloscope which could display the results of the experiment. Since the experiment was very sensitive to ambient light, wires (from the power supplies, signals from the thermometer and SiPM... etc.) had to be connected to a ______________. This ____________ was built right into the walls of the box to prevent any ambient light from slipping through the cracks.
		+
		+	~~Calibration~~
		+
		+
		+
		+
		+	[[Counting individual photons\|Back]]

← Older revision	Revision as of 22:03, 31 January 2008
(No difference)

← Older revision	Revision as of 18:30, 25 January 2008
(No difference)