HRRL Electron OSA - Revision history

Swanjase at 23:27, 17 December 2013

2013-12-17T23:27:00Z

Swanjase at 23:26, 17 December 2013

2013-12-17T23:26:26Z

Oborn at 06:38, 5 February 2009

2009-02-05T06:38:56Z

Oborn at 18:51, 26 October 2008

2008-10-26T18:51:40Z

Oborn at 18:59, 23 October 2008

2008-10-23T18:59:45Z

Oborn at 18:58, 23 October 2008

2008-10-23T18:58:58Z

Oborn at 16:57, 23 October 2008

2008-10-23T16:57:39Z

Oborn at 16:56, 23 October 2008

2008-10-23T16:56:20Z

Oborn at 16:50, 23 October 2008

2008-10-23T16:50:42Z

Oborn at 16:45, 23 October 2008

2008-10-23T16:45:40Z

← Older revision		Revision as of 23:27, 17 December 2013
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	A small apperature collimator will be used to reduce the current into the HRRL experimental cell from its maximum current of 80 mA to less than 2 mA peak current inside the HRRL experimental cell. The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet. A 2" x 4" x 8" Aluminum block collimator with a 2 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current. The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.		A small apperature collimator will be used to reduce the current into the HRRL experimental cell from its maximum current of 80 mA to less than 2 mA peak current inside the HRRL experimental cell. The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet. A 2" x 4" x 8" Aluminum block collimator with a 2 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current. The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.

−	[[Image:Electrons_hit_Phos_screen.jpg \| 100.px]][[Image:Electrons_hit_Phos_screen_2.jpg \| 100.px]]	+	[[Image:Electrons_hit_Phos_screen.jpg \| 100 px]][[Image:Electrons_hit_Phos_screen_2.jpg \| 100 px]]

← Older revision		Revision as of 23:26, 17 December 2013
Line 18:		Line 18:
	A small apperature collimator will be used to reduce the current into the HRRL experimental cell from its maximum current of 80 mA to less than 2 mA peak current inside the HRRL experimental cell. The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet. A 2" x 4" x 8" Aluminum block collimator with a 2 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current. The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.		A small apperature collimator will be used to reduce the current into the HRRL experimental cell from its maximum current of 80 mA to less than 2 mA peak current inside the HRRL experimental cell. The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet. A 2" x 4" x 8" Aluminum block collimator with a 2 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current. The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.

−	[[Image:Electrons_hit_Phos_screen.jpg \| ~~300~~.px]][[Image:Electrons_hit_Phos_screen_2.jpg \| ~~300~~.px]]	+	[[Image:Electrons_hit_Phos_screen.jpg \| 100.px]][[Image:Electrons_hit_Phos_screen_2.jpg \| 100.px]]

← Older revision		Revision as of 06:38, 5 February 2009
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		+	[http://wiki.iac.isu.edu/index.php/HRRL_OSA_Docs Go Back]
		+
	Operational Safety Assessment		Operational Safety Assessment

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−	[http://~~www~~.iac.isu.edu~~/mediawiki~~/index.php/~~HRRL go back~~]	+	[http://wiki.iac.isu.edu/index.php/HRRL_OSA_Docs Go Back]

← Older revision		Revision as of 18:51, 26 October 2008
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	A small apperature collimator will be used to reduce the current into the HRRL experimental cell from its maximum current of 80 mA to less than 2 mA peak current inside the HRRL experimental cell. The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet. A 2" x 4" x 8" Aluminum block collimator with a 2 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current. The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.		A small apperature collimator will be used to reduce the current into the HRRL experimental cell from its maximum current of 80 mA to less than 2 mA peak current inside the HRRL experimental cell. The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet. A 2" x 4" x 8" Aluminum block collimator with a 2 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current. The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.
		+
		+	[[Image:Electrons_hit_Phos_screen.jpg \| 300.px]][[Image:Electrons_hit_Phos_screen_2.jpg \| 300.px]]
		+

	The HRRL ceiling dose is expected to be lower than 2 mrad/hr due to the beam divergence and transport loss into the HRRL experimental cell using the collimation described above. The collimator will also be used to monitor the peak current on the accelerator side. The Aluminum collimator with the 1 mm diameter hole will have an aluminum shutter placed in front of it to allow the accelerator operators to tune the electron beam and prevent the transport of electrons into the HRRL experimental cell. The shutter can be remotely opened after establishing stable accelerator operations and maximum beam spot size. A FC will be placed on the HRRL experimental cell side of the wall that is able to measure peak currents down to 2mA and can be used as a fast accelerator shutdown interlock to prevent current in the HRRL experimental cell that would exceed a dose 2 mrad/hr in public areas near the cell. Measurements from this test will be used to define the safety envelope and associated HRRL operational parameters.		The HRRL ceiling dose is expected to be lower than 2 mrad/hr due to the beam divergence and transport loss into the HRRL experimental cell using the collimation described above. The collimator will also be used to monitor the peak current on the accelerator side. The Aluminum collimator with the 1 mm diameter hole will have an aluminum shutter placed in front of it to allow the accelerator operators to tune the electron beam and prevent the transport of electrons into the HRRL experimental cell. The shutter can be remotely opened after establishing stable accelerator operations and maximum beam spot size. A FC will be placed on the HRRL experimental cell side of the wall that is able to measure peak currents down to 2mA and can be used as a fast accelerator shutdown interlock to prevent current in the HRRL experimental cell that would exceed a dose 2 mrad/hr in public areas near the cell. Measurements from this test will be used to define the safety envelope and associated HRRL operational parameters.

← Older revision		Revision as of 18:59, 23 October 2008
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	e. In the vicinity of the klystron		e. In the vicinity of the klystron
		+
		+
		+	[http://www.iac.isu.edu/mediawiki/index.php/HRRL go back]

@@ Line 14: / Line 14: @@
 Our goal is to inject only one electron per pulse into the HRRL experimental Cell, a current several order of manginute less than 2 mA even at the maximum HRRL rep rate.
-A small apperature collimator will be used to reduce the current into the HRRL experimental cell  from its maximum current of 80 mA to less than 2 mA  peak current inside the HRRL experimental cell.  The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet.  A 2" x 4" x 8" Aluminum block collimator with a 1 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current.  The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.
+A small apperature collimator will be used to reduce the current into the HRRL experimental cell  from its maximum current of 80 mA to less than 2 mA  peak current inside the HRRL experimental cell.  The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet.  A 2" x 4" x 8" Aluminum block collimator with a 2 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current.  The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr above the HRRL ceiling cell if there were no beam loss.
 The HRRL ceiling dose is expected to be lower than 2 mrad/hr due to the beam divergence and transport loss into the HRRL experimental cell using the collimation described above.  The collimator will also be used to monitor the peak current on the accelerator side.   The Aluminum collimator with the 1 mm diameter hole will have an aluminum shutter placed in front of it to allow the accelerator operators to tune the electron beam and prevent the transport of electrons into the HRRL experimental cell.   The shutter can be remotely opened after establishing stable accelerator operations and maximum beam spot size.   A FC will be placed on the HRRL experimental cell side of the wall that is able to measure peak currents down to 2mA and can be used as a fast accelerator shutdown interlock to prevent current in the HRRL experimental cell that would exceed a dose 2 mrad/hr in public areas near the cell.  Measurements from this test will be used to define the safety envelope and associated HRRL operational parameters.

@@ Line 16: / Line 16: @@
 A small apperature collimator will be used to reduce the current into the HRRL experimental cell  from its maximum current of 80 mA to less than 2 mA  peak current inside the HRRL experimental cell.  The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet.  A 2" x 4" x 8" Aluminum block collimator with a 1 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current.  The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr at the HRRL ceiling cell if there were no beam loss.
-The HRRL ceiling dose is expected to be lower than 2 mrad/hr due to the beam divergence and transport loss into the HRRL experimental cell using the collimation described above.  The collimator will also be used to monitor the peak current on the accelerator side.   The Aluminum collimator with the 1 mm diameter hole will have an aluminum shutter placed in front of it to allow the accelerator operators to tune the electron beam and prevent the transport of electrons into the HRRL experimental cell.   The shutter can be remotely opened after establishing stable accelerator operations in order to measure the radiation field in public areas close to the HRRL experimental cell.   A FC will be placed on the HRRL experimental cell side of the wall that is able to measure peak currents down to 2mA and can be used as a fast accelerator shutdown interlock to prevent current in the HRRL experimental cell that would exceed a dose 2 mrad/hr in public areas near the cell.  Measurements from this test will be used to define the safety envelope and associated HRRL operational parameters.
+The HRRL ceiling dose is expected to be lower than 2 mrad/hr due to the beam divergence and transport loss into the HRRL experimental cell using the collimation described above.  The collimator will also be used to monitor the peak current on the accelerator side.   The Aluminum collimator with the 1 mm diameter hole will have an aluminum shutter placed in front of it to allow the accelerator operators to tune the electron beam and prevent the transport of electrons into the HRRL experimental cell.   The shutter can be remotely opened after establishing stable accelerator operations and maximum beam spot size.   A FC will be placed on the HRRL experimental cell side of the wall that is able to measure peak currents down to 2mA and can be used as a fast accelerator shutdown interlock to prevent current in the HRRL experimental cell that would exceed a dose 2 mrad/hr in public areas near the cell.  Measurements from this test will be used to define the safety envelope and associated HRRL operational parameters.
 . Safety

@@ Line 16: / Line 16: @@
 A small apperature collimator will be used to reduce the current into the HRRL experimental cell  from its maximum current of 80 mA to less than 2 mA  peak current inside the HRRL experimental cell.  The beam spot size after the 90 degree bend has been observed to be a 2 cm long oval that is about 1 cm wide and does not exceed this size due to the intrinsic collimation of the dipole bending magnet.  A 2" x 4" x 8" Aluminum block with a 1 mm diameter hole will be placed near the HRRL experimental wall in order to reduce the current.  The current would be reduced by at least a factor of 30 if there were no beam divergence thereby reducing the peak beam current to 2.5 mA resulting in a dose of about 2 mrad/hr at the HRRL ceiling cell if there were no beam loss.
-The HRRL ceiling dose is expected to be lower then 2 mrad/hr due to the beam divergence and transport loss into the HRRL experimental cell.  The Aluminum collimator with the 1 mm diameter hole will have an aluminum shutter placed in front of it to allow the accelerator operators to tune the electron beam and prevent the transport of electrons in the HRRL experimental cell.  The shutter can be remotely opened after establishing stable accelerator operations in order to measure the radiation field in public areas close to the HRRL experimental cell.  A FC will be placed on the HRRL experimental cell side of the wall that is able to measure currents down to 2mA and can be used as a fast accelerator shutdown interlock to prevent current in the HRRL experimental cell that would exceed 2 mrad/hr.
+The HRRL ceiling dose is expected to be lower than 2 mrad/hr due to the beam divergence and transport loss into the HRRL experimental cell.  The Aluminum collimator with the 1 mm diameter hole will have an aluminum shutter placed in front of it to allow the accelerator operators to tune the electron beam and prevent the transport of electrons in the HRRL experimental cell.  The shutter can be remotely opened after establishing stable accelerator operations in order to measure the radiation field in public areas close to the HRRL experimental cell.   A FC will be placed on the HRRL experimental cell side of the wall that is able to measure peak currents down to 2mA and can be used as a fast accelerator shutdown interlock to prevent current in the HRRL experimental cell that would exceed 2 mrad/hr.  Measurements from this test will be used to define the safety envelope and associated HRRL operational parameters.
 . Safety