TF SBIR2012 - Revision history

Foretony at 17:51, 5 November 2011

2011-11-05T17:51:47Z

Foretony at 17:45, 5 November 2011

2011-11-05T17:45:25Z

Foretony at 17:34, 5 November 2011

2011-11-05T17:34:37Z

Foretony at 17:29, 5 November 2011

2011-11-05T17:29:51Z

Foretony at 17:28, 5 November 2011

2011-11-05T17:28:00Z

Foretony at 17:24, 5 November 2011

2011-11-05T17:24:21Z

Foretony at 03:13, 3 November 2011

2011-11-03T03:13:04Z

Foretony at 03:09, 3 November 2011

2011-11-03T03:09:04Z

Foretony at 03:06, 3 November 2011

2011-11-03T03:06:55Z

Foretony at 03:06, 3 November 2011

2011-11-03T03:06:23Z

← Older revision		Revision as of 17:51, 5 November 2011
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	Does the B-field change in the presence of the beam?		Does the B-field change in the presence of the beam?
		+
		+	Why not put thermal neutron shielding upstream of a Hall probe monitoring a fringe field?
		+
		+	Temperature probes using the technology are shown to survive the high neutron fluence,
		+	will the technique used to look for B-field induced shifts survive.
		+	What is the shift for temperature fluctuations compare to that induced by B-fields?

	FRIB uses 0.5-2.5 Telsa strength magnetic dipoles to separate rare isotopes. Currently Hall probes are used to set B-field and then remove probe during operation to prevent damage. Gamma, neutron, and proton fluxes are about 2 E10 n/cm^2/s (mostly thermal neutrons).		FRIB uses 0.5-2.5 Telsa strength magnetic dipoles to separate rare isotopes. Currently Hall probes are used to set B-field and then remove probe during operation to prevent damage. Gamma, neutron, and proton fluxes are about 2 E10 n/cm^2/s (mostly thermal neutrons).

← Older revision		Revision as of 17:45, 5 November 2011
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	1.) Scientific/Technical Approach		1.) Scientific/Technical Approach
		+
		+	Hall probes are available which are rated to 10^15 n/cm^2 at 0.1 MeV. Why aren't these OK for FRIB when the neutron fluence is 10^10 n/cm^2/s. The FBIR division director support letter indicates that NMR probes will be used but no mention of Hall probes. They indicate the current method of inserting a (NMR?)probe, measuring the B-field with beam off, and then tuning the beam will lead to long beam tuning times.
		+
		+	Does the B-field change in the presence of the beam?

	FRIB uses 0.5-2.5 Telsa strength magnetic dipoles to separate rare isotopes. Currently Hall probes are used to set B-field and then remove probe during operation to prevent damage. Gamma, neutron, and proton fluxes are about 2 E10 n/cm^2/s (mostly thermal neutrons).		FRIB uses 0.5-2.5 Telsa strength magnetic dipoles to separate rare isotopes. Currently Hall probes are used to set B-field and then remove probe during operation to prevent damage. Gamma, neutron, and proton fluxes are about 2 E10 n/cm^2/s (mostly thermal neutrons).

@@ Line 16: / Line 16: @@
 a.) To what extent does the proposal build upon or extent current stat-of-the-art
-The project proposes adapt Optical Frequency Domain Reflectometry technology licensed from NASA to develop a 0.5 - 5 Telsa magnetic fields monitoring device that can withstand  radiation environments containing thermal neutron fluxes on the order of 2 E10 n/cm^2/s.  Luna is currently using the technology to measure temperature and strain at locations that are about 30 micron in size.
+The project proposes adapt Optical Frequency Domain Reflectometry technology licensed from NASA to develop a 0.5 - 2.5 Telsa magnetic fields monitoring device that can withstand  radiation environments containing thermal neutron fluxes on the order of 2 E10 n/cm^2/s.  Luna is currently using the technology to measure temperature and strain at locations that are about 30 micron in size.
 b.) How new or unique is the idea

@@ Line 16: / Line 16: @@
 a.) To what extent does the proposal build upon or extent current stat-of-the-art
-The project proposes adapt Optical Frequency Domain Reflectometry technology licensed from NASA to develop a 0.5 - 5 Telsa magnetic fields monitoring device that can withstand  radiation environments containing thermal neutron fluxes on the order of 2 E10 n/cm^2/s.
+The project proposes adapt Optical Frequency Domain Reflectometry technology licensed from NASA to develop a 0.5 - 5 Telsa magnetic fields monitoring device that can withstand  radiation environments containing thermal neutron fluxes on the order of 2 E10 n/cm^2/s.  Luna is currently using the technology to measure temperature and strain at locations that are about 30 micron in size.
 b.) How new or unique is the idea

@@ Line 19: / Line 19: @@
 b.) How new or unique is the idea
 c.) Hos significant is the scientific or technical challenge
@@ Line 38: / Line 40: @@
 On pg 7 of the proposal it was stated that Object 1 for phase 1 will be to determine the sensor requirements need by FRIB.  This is a little confusig given the goals shown on pg 13 would imply that the Objective for phase 1 has already been achieved?
 c.) does effort justify the cost.
@@ Line 46: / Line 50: @@
 b.) liklihood work will lead to marketable product
 c.) liklihood product will attract further funding

← Older revision		Revision as of 17:24, 5 November 2011
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	a.) To what extent does the proposal build upon or extent current stat-of-the-art		a.) To what extent does the proposal build upon or extent current stat-of-the-art
		+
		+	The project proposes adapt Optical Frequency Domain Reflectometry technology licensed from NASA to develop a 0.5 - 5 Telsa magnetic fields monitoring device that can withstand radiation environments containing thermal neutron fluxes on the order of 2 E10 n/cm^2/s.

	b.) How new or unique is the idea		b.) How new or unique is the idea

← Older revision		Revision as of 03:13, 3 November 2011
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	b.) soundness of Phase I work		b.) soundness of Phase I work
		+
		+	On pg 7 of the proposal it was stated that Object 1 for phase 1 will be to determine the sensor requirements need by FRIB. This is a little confusig given the goals shown on pg 13 would imply that the Objective for phase 1 has already been achieved?

	c.) does effort justify the cost.		c.) does effort justify the cost.

@@ Line 6: / Line 6: @@
 FRIB uses 0.5-2.5 Telsa strength magnetic dipoles to separate rare isotopes.  Currently Hall probes are used to set B-field and then remove probe during operation to prevent damage.  Gamma, neutron, and proton fluxes are about 2 E10 n/cm^2/s (mostly thermal neutrons).
-  If its mostly thermal neutrons then why not capture them with a liner?
+  If its mostly thermal neutrons then why not park the hall probe near the dipole field and shield it with a thermal neutron capture them with a liner?
    Why do you need to monitor the B-field when beam is on?

← Older revision		Revision as of 03:06, 3 November 2011
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	d.) Is a breakthrough possible		d.) Is a breakthrough possible

−	The propsal seek to develop a device to measure the magnetic field of a dipole (0.5 - 2.5 T)to an accuracy of 0.01% which can survive in a radiation environment with a neutron, gamma, and proton combined flux of 10^17 particle/cm^2/s. There is a statement that thermal neutrons make up most of the flux. There is little information on how much of the remaiing flux is from photons and protons thus it is difficult to determine if the device could be degraded from the radiation damage of the photons or protons.	+	The propsal seek to develop a device to measure the magnetic field of a dipole (0.5 - 2.5 T)to an accuracy of 0.01% which can survive in a radiation environment with a neutron, gamma, and proton combined flux of 10^10 particle/cm^2/s. There is a statement that thermal neutrons make up most of the flux. There is little information on how much of the remaiing flux is from photons and protons thus it is difficult to determine if the device could be degraded from the radiation damage of the photons or protons.

← Older revision		Revision as of 03:06, 3 November 2011
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	d.) Is a breakthrough possible		d.) Is a breakthrough possible
		+
		+	The propsal seek to develop a device to measure the magnetic field of a dipole (0.5 - 2.5 T)to an accuracy of 0.01% which can survive in a radiation environment with a neutron, gamma, and proton combined flux of 10^17 particle/cm^2/s. There is a statement that thermal neutrons make up most of the flux. There is little information on how much of the remaiing flux is from photons and protons thus it is difficult to determine if the device could be degraded from the radiation damage of the photons or protons.
		+

	e.) does applicant have knowledge of the subject		e.) does applicant have knowledge of the subject