IAC 1-4-08 - Revision history

Oborn: /* Alignment */

2008-02-18T16:45:37Z

Alignment

Oborn: /* Apparatus */

2008-02-18T16:34:24Z

Apparatus

Oborn: /* Apparatus */

2008-02-18T16:29:46Z

Apparatus

Oborn: /* Apparatus */

2008-02-18T16:18:31Z

Apparatus

Oborn: /* Apparatus */

2008-02-18T16:15:04Z

Apparatus

Oborn: /* Apparatus */

2008-02-18T16:14:48Z

Apparatus

Oborn at 16:13, 18 February 2008

2008-02-18T16:13:04Z

Oborn at 16:10, 18 February 2008

2008-02-18T16:10:29Z

Oborn at 00:18, 5 January 2008

2008-01-05T00:18:03Z

Oborn at 00:15, 5 January 2008

2008-01-05T00:15:16Z

@@ Line 32: / Line 32: @@
 ==Alignment ==
-A laser was mounted on the most downstream wall of the experimental cell and used to align the drift chambers with the beam.  The laser was centered on the beam line located in the experimental hall and then the aluminum brick collimators were added in order to optimize laser transmission upstream to the beam pip blank off.  The image shown in the figure below shows how the drift chambers were moved until the three sense wires ( #3,#4, and #5) reflected the laser light.
+A laser was mounted on the most downstream wall of the experimental cell and used to align the drift chambers with the beam.  The laser was centered on the beam line located in the experimental hall and then the aluminum brick collimators were added in order to optimize laser transmission upstream to the beam pip blank off.  The image shown in the figure below shows how the drift chambers were moved until the three sense wires ( #3,#4, and #5) reflected the laser light.  The drift chambers were also tilted such that the sense wires would be horizontal with respect to the beam line.
 [[Image:DC_LaserAlignment_1-4-08.jpg | 200 px]]
 [[Image:Gun-Metalica_PostAmp_1-4-08_A.jpg | 200 px]]

@@ Line 21: / Line 21: @@
 [[Image:DC_Config_WideView_1-4-08.jpg | 200 px]]
-The left figure above shows a close up view of the first Aluminum course collimator, followed by a wide (blue) scintillator,  then an Aluminum brick with a 3 mm diameter hole, followed by the Drift chamber known as Plastica, then Metallica.  Both detectors are sitting on a translation table capable of moving both horizontally and vertically.   The right figure shows a wider view of the apparatus.  Another scintillator paddle was placed downstream of the drift chambers.  An efficiency measurement is facilitated using a coincidence formed between the first two scintillators which sandwhich the drift chambers.
+The left figure above shows a close up view of the first Aluminum course collimator, followed by a wide (blue) scintillator,  then an Aluminum brick with a 3 mm diameter hole, followed by the Drift chamber known as Plastica, then Metallica.  Both detectors are sitting on a translation table capable of moving both horizontally and vertically.   The right figure shows a wider view of the apparatus.  Another scintillator paddle was placed downstream of the drift chambers.  An efficiency measurement is facilitated using a coincidence formed between the first two scintillators which sandwhich the drift chambers.   An alignment laser is visible at the most downstream location visible in the photo.
- We had an Aluminum brick with three different diameter (1, 3, and 6 mm) holes.
+We had an Aluminum brick with three different diameter (1, 3, and 6 mm) holes.
@@ Line 31: / Line 31: @@
 ==Alignment ==

@@ Line 16: / Line 16: @@
 = Apparatus =
 [[Image:DC_Config_1-4-08.jpg | 200 px]]
 [[Image:DC_Config_WideView_1-4-08.jpg | 200 px]]
-The left figure shows a close up view of the first Aluminum course collimator, followed by a wide (blue) scintillator,  then an Aluminum brick with a 1.5 mm diameter hole, followed by the Drift chamber known as Plastica, then Metallica.  Both detectors are sitting on a translation table capable of moving both horizontally and vertically.
+  We had an Aluminum brick with three different diameter (1, 3, and 6 mm) holes.
 We put an aluminum brick in front of the electron beam in order to look at photons hitting the Drift Chamber.
 We saw a signal out of the drift chamber once for every 10 gun pulses.
 [[Image:Gun-Metalica_PostAmp_1-4-08_A.jpg | 200 px]]

← Older revision		Revision as of 16:18, 18 February 2008
Line 22:		Line 22:
	==Alignment ==		==Alignment ==

		+	The left figure shows a close up view of the first Aluminum course collimator, followed by a wide (blue) scintillator, then an Aluminum brick with a 1.5 mm diameter hole, followed by the Drift chamber known as Plastica, then Metallica. Both detectors are sitting on a translation table capable of moving both horizontally and vertically.

← Older revision		Revision as of 16:15, 18 February 2008
Line 17:		Line 17:
	= Apparatus =		= Apparatus =
	[[Image:DC_Config_1-4-08.jpg \| 200 px]]		[[Image:DC_Config_1-4-08.jpg \| 200 px]]
		+	[[Image:DC_Config_WideView_1-4-08.jpg \| 200 px]]

← Older revision		Revision as of 16:14, 18 February 2008
Line 16:		Line 16:

	= Apparatus =		= Apparatus =
−	[[Image:DC_Config_1-4-08.jpg]]	+	[[Image:DC_Config_1-4-08.jpg \| 200 px]]

@@ Line 1: / Line 1: @@
 Today we installed the drift chambers and had our first beam on target.
 /10 ArCo2
 {| border="1"  |cellpadding="20" cellspacing="0
@@ Line 13: / Line 14: @@
 |Guard ||   750 ||
 |}

← Older revision		Revision as of 00:18, 5 January 2008
Line 2:		Line 2:

	90/10 ArCo2		90/10 ArCo2
		+	{\| border="1" \|cellpadding="20" cellspacing="0
		+	\|colspan= "3" \| HV settings
		+	\|-
		+	\| Wire \|\| Volts \|\| current (<math>\mu</math>A)
		+	\|-
		+	\|Sense \|\| 1500 \|\|
		+	\|-
		+	\|Field \|\| -750 \|\|
		+	\|-
		+	\|Guard \|\| 750 \|\|
		+	\|}

		+
		+	We put an aluminum brick in front of the electron beam in order to look at photons hitting the Drift Chamber.
		+	We saw a signal output oout of the drift chamber once for every 10 gun pulses.

	[[Image:Gun-Metalica_PostAmp_1-4-08_A.jpg \| 200 px]]		[[Image:Gun-Metalica_PostAmp_1-4-08_A.jpg \| 200 px]]

@@ Line 6: / Line 6: @@
 [[Image:Gun-Metalica_PostAmp_1-4-08_A.jpg | 200 px]]
 [[Image:Gun-Metalica_PostAmp_1-4-08_B.jpg | 200 px]]
 [http://www.iac.isu.edu/mediawiki/index.php/Mini-prototype#IAC_Runs Go Back]