1-2-07 Tuning - Revision history

Oborn at 22:24, 3 January 2008

2008-01-03T22:24:18Z

Oborn at 22:23, 3 January 2008

2008-01-03T22:23:43Z

Oborn at 19:39, 3 January 2008

2008-01-03T19:39:35Z

Oborn at 19:39, 3 January 2008

2008-01-03T19:39:17Z

Oborn at 19:37, 3 January 2008

2008-01-03T19:37:28Z

Oborn at 19:07, 3 January 2008

2008-01-03T19:07:39Z

Oborn at 18:51, 3 January 2008

2008-01-03T18:51:40Z

New page

We just received authorization for electrons into the experimental cell.

Before doing that we made measurements in the accelerator hall using a scintillator. An aluminum brick was placed in front of the scintillator in order to determine gamma contamination.

#16 k/min :Gun off, 90 degree bend, integrate over RF pulse, alum block covereing scint
#6.5k/min: Gun off, tuned to zero degree port, in RF pulse, alum block covereing scint
#50k/min : Gun off, 90 degree bend, over RF pulse, alum block out
#16k/min : Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, int over RF pulse, block out
#850 /min: Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over Gun pulse, block out
#:8 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over RF pulse, block out, Decrease accel cavity potential
#: k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over RF pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode

@@ Line 18: / Line 18: @@
 We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse.  In other words the Field emmision electrons were almost eliminated.  Although the gun pulse was 100 ns long we observed a pulse width on the scintilator that was about 200 ns long.
-brick out    1700 cnts/min        2800 cnts/min
+brick out:    1700 cnts/min        2800 cnts/min
 brick in     400 cnts/min          860

← Older revision		Revision as of 22:23, 3 January 2008
Line 17:		Line 17:

	We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse. In other words the Field emmision electrons were almost eliminated. Although the gun pulse was 100 ns long we observed a pulse width on the scintilator that was about 200 ns long.		We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse. In other words the Field emmision electrons were almost eliminated. Although the gun pulse was 100 ns long we observed a pulse width on the scintilator that was about 200 ns long.
		+
		+	brick out 1700 cnts/min 2800 cnts/min
		+	brick in 400 cnts/min 860

@@ Line 13: / Line 13: @@
 #16k/min : Gun off, 90 degree bend  dipoles looking at 15 MeV side of pulse, int over RF pulse, block out
 #850 /min: Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over Gun pulse, block out
-#:2.8 k/min : Gun On, 90 degree bend  dipoles looking at 15 MeV side of pulse, integrate over '''RF''' pulse, block out, Decrease accel cavity potential
+#2.8 k/min : Gun On, 90 degree bend  dipoles looking at 15 MeV side of pulse, integrate over '''RF''' pulse, block out, Decrease accel cavity potential
-#:2.3 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over '''Gun''' pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode
+#2.3 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over '''Gun''' pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode
 We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse.  In other words the Field emmision electrons were almost eliminated.  Although the gun pulse was 100 ns long we observed a pulse width on the scintilator that was about 200 ns long.

@@ Line 5: / Line 5: @@
 Disciminator = 200 mV
 Before doing that we made measurements in the accelerator hall using a scintillator.  An aluminum brick was placed in front of the scintillator in order to determine gamma contamination.
@@ Line 17: / Line 16: @@
 #:2.3 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over '''Gun''' pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode
-We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse.  In other words the Field emmision electrons were almost eliminated.  Although the gun pulse was 100 ns long
+We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse.  In other words the Field emmision electrons were almost eliminated.  Although the gun pulse was 100 ns long we observed a pulse width on the scintilator that was about 200 ns long.

@@ Line 2: / Line 2: @@
-PMT HV = 1620 Volts
+PMT HV = 1120 Volts
 Disciminator = 200 mV
 Before doing that we made measurements in the accelerator hall using a scintillator.  An aluminum brick was placed in front of the scintillator in order to determine gamma contamination.
@@ Line 12: / Line 14: @@
 #16k/min : Gun off, 90 degree bend  dipoles looking at 15 MeV side of pulse, int over RF pulse, block out
 #850 /min: Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over Gun pulse, block out
-#:8 k/min : Gun On, 90 degree bend  dipoles looking at 15 MeV side of pulse, integrate over RF pulse, block out, Decrease accel cavity potential
+#:2.8 k/min : Gun On, 90 degree bend  dipoles looking at 15 MeV side of pulse, integrate over '''RF''' pulse, block out, Decrease accel cavity potential
-#: k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over RF pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode
+#:2.3 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over '''Gun''' pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode

← Older revision		Revision as of 19:07, 3 January 2008
Line 1:		Line 1:
	We just received authorization for electrons into the experimental cell.		We just received authorization for electrons into the experimental cell.
		+
		+
		+	PMT HV = 1620 Volts
		+	Disciminator = 200 mV

	Before doing that we made measurements in the accelerator hall using a scintillator. An aluminum brick was placed in front of the scintillator in order to determine gamma contamination.		Before doing that we made measurements in the accelerator hall using a scintillator. An aluminum brick was placed in front of the scintillator in order to determine gamma contamination.