NSF-MRI 2013 - Revision history

Foretony: /* e.) Management */

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e.) Management

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e.) Management

Foretony: /* d.) Impact */

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d.) Impact

Foretony: /* c.) Description */

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c.) Description

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c.) Description

Foretony: /* c.) Description */

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c.) Description

Foretony: /* References */

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References

Foretony: /* c.) Description */

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c.) Description

Foretony: /* References */

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References

Foretony: /* c.) Description */

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c.) Description

← Older revision		Revision as of 06:49, 21 February 2013
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	Although most of the equipment will be procured from established vendors, expertise in several areas during installation and assembly is required. The Idaho Accelerator Center will provide an engineer to oversee the installation the transport system by OCS IntelliTrak as well as the installation of a translation stage for the CVD diamond detectors. The PI of this proposal will be responsible for installing the data acquisition system and associated feedback system. The CoPIs have an established record of isotope production and PAA as well as ongoing research programs. Once most of the equipment has been installed and commission, the CoPIs will evaluate the systems performance in year two as part of their ongoing research program in isotope production and PAA. Their research programs will be used to benchmark the performance of this tool in year two.		Although most of the equipment will be procured from established vendors, expertise in several areas during installation and assembly is required. The Idaho Accelerator Center will provide an engineer to oversee the installation the transport system by OCS IntelliTrak as well as the installation of a translation stage for the CVD diamond detectors. The PI of this proposal will be responsible for installing the data acquisition system and associated feedback system. The CoPIs have an established record of isotope production and PAA as well as ongoing research programs. Once most of the equipment has been installed and commission, the CoPIs will evaluate the systems performance in year two as part of their ongoing research program in isotope production and PAA. Their research programs will be used to benchmark the performance of this tool in year two.

−	Most of the elements in this project have low risk for success. The CVD diamond detector system used to monitor the photon flux, however, will be challenged to be viable at very high photon fluxes. The position of these detectors will be re-evaluate in the event that the system saturates above photon fluxes of 10$^{12} photons/s/cm$^2$. Moving the devices downstream will reduce the photon flux thereby mitigating the risks.	+	Most of the elements in this project have low risk for success. The CVD diamond detector system used to monitor the photon flux, however, will be challenged to be viable at very high photon fluxes. The position of these detectors will be re-evaluate in the event that the system saturates above photon fluxes of 10$^{12}$ photons/s/cm$^2$. Moving the devices downstream will reduce the photon flux thereby mitigating the risks.

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 \section{Management Plan (e)} ( '''2 pages''')
-The Idaho Accelerator Center has an established record of managing a facility serving the needs of interdisciplinary researchers that use beams of electrons or photons in their research.   This proposal requests the procurement of two main pieces of equipment that, when combined,  serve as an inegrated instrument for the production of Isotopes and Photon Activation Analysis.  The components used to develop this instrument may be considered ``off the shelf''.  The accelerator expertise of the IAC and the detector development expertise of the PI will be relied upon to construct a working instrument. The track records of both entities are quite sound for this project.
+The design, construction, and commissioning phases of the project are outlined in Table~\ref{table:Timeline}.
-Months after award | Activity | Phase |
+Most of the elements in this project have low risk for success.  The CVD diamond detector system used to monitor the photon flux, however, will be challenged to be viable at very high photon fluxes.  The position of these detectors will be re-evaluate in the event that the system saturates above photon fluxes of 10$^{12} photons/s/cm$^2$.  Moving the devices downstream will reduce the photon flux thereby mitigating the risks.
 =References=

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 \section{Impact on Research and Training Infrastructure (d)} ( '''2 pages''')
-The proposed instrument will be a facility for performing isotope production research and training accelerator physicists.
+The proposed instrument will be a facility for performing research on isotope production as well as a tool for performing photon activation analysis,  and training accelerator physicists.
 The research on copper isotopes is well underway and quickly approaching a point where production for consumption is likely.
-The production of other isotopes for industry and research will also be under investigation using this device.  The goal will be for the instrument to be self sustaining and a means of training students.
+The production of other isotopes for industry and research will also be under investigation using this device.  At least three institutions have provide letter of interest in this tool should it become available.  The goal is to create a funding stream from the production of isotopes that will sustain the maintenance of the tool so it can be available as a research platform and a training facility for students.
 The instrument will be an opportunity to train students in the operation of an electron accelerator as well as the techniques for isotope production and PAA.
 Graduate students, once trained, would operate the accelerator as a means of supporting their studies at ISU.
 == e.) Management==

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-\subsection{Electron Beam Components
+\subsection{Electron Beam Control and Monitoring Components}
+A 5 kGauss bending magnet will also be procured to sweep electrons away from the sample.   The magnet will have a 4" x 3" footprint in order to minimize the distance between the tungsten converter target and the sample holder.  Sample heating is expected to be reduced by least 80\% and allow an increase in the photon flux beyond that predicted in Figure~\ref{fig:JackPlusPhotonFlux}.
 == d.) Impact ==

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 \subsection{Transport System}
-A preliminary layout of the transport system ("Rabbit") is shown in Figure~\ref{fig:TransportSystem}.
+A preliminary layout of the transport system ("Rabbit") is shown in Figure~\ref{fig:TransportSystem}.  Samples are removed by a nematic arm from the exit port of the accelerator.  The sample will be loaded into the proposed transport system ("Rabbit") which will move the sample out of the high radiation area where users can collect the sample.  If needed the sample can be lowered into a lead shield outside of the high radiation area.   The middle picture illustrate the innovative drive system used by OCS IntelliTrak to move the sample along a drive shaft. Figure~\ref{fig:TransportSystem}.  OCS IntelliTrak has quoted the cost of \$38,318 for the system shown in the bottom of Figure~\ref{fig:TransportSystem} and will install the system for \$11,400, see attached quote.
 \begin{figure}[htbp]
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 \mbox{\includegraphics*[width=9cm]{Graphs/WhiteRoomEndStation_02072013.png}}
 \includegraphics*[width=9cm]{Graphs/500-DriveTube.jpg}
-\caption{\small An illustration of the drive system from IntelliTrack which will be used to construct a ``Rabbit'' conveyor system to remove samples from the high radiation area.}
+\caption{\small An illustration of the drive system from OCS IntelliTrack which will be used to construct a ``Rabbit'' conveyor system to remove samples from the high radiation area.}
 \label{fig:TransportSystem}
 \end{center}

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 \subsection{CVD detectors}
 Journal: Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment - NUCL INSTRUM METH PHYS RES A , vol. 524, no. 1, pp. 115-123, 2004
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 Diamond detectors in particle physics,
 R J Tapper, Rep. Prog. Phys. 63 (2000) 1273–1316.
 \begin{figure}[htbp]
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 \subsection{Transport System}
 \begin{figure}[htbp]
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-\subsection{BPM monitors}
+\subsection{Electron Beam Components
 \subsection{permanent deflecting magnet}

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 \bibitem{FY2013CongBudgetOff}  FY2013 Cngressionl Budget (http://science.energy.gov/~/media/budget/pdf/sc-budget-request-to-congress/fy-2013/Cong_Budget_2013_IsoptopeProductionandDistributionProgramFunding.pdf)
-\bibitem{"Diamond detectors in particle physics"  R J Tapper, Rep. Prog. Phys. 63 (2000) 1273–1316.
+\bibitem{Tapper2000}"Diamond detectors in particle physics" , R J Tapper, Rep. Prog. Phys. 63 (2000) 1273–1316.
 \end{thebibliography}

← Older revision		Revision as of 05:13, 21 February 2013
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	The chemical vapor deposition (CVD) of polycrystalline diamond onto films has become an industry that currently provides "off-the-shelf" detectors among other applications.		The chemical vapor deposition (CVD) of polycrystalline diamond onto films has become an industry that currently provides "off-the-shelf" detectors among other applications.

−	A set of photon detectors (CVD diamond film based) will be purchased and mounted on a movable platform that will sweep the detectors through the brehmmstrahlung beam measuring its profile. Figure~\ref{fig:CVDdiamondDetector} show the packages detector that is available from CIVIDEC Instrumentation. The manufacturer specifications indicate that a photon flux of 10$^9$ to 10$^{12}$ photons/sec/cm$^2$ should output voltages from 50 mV to 5 V in a 50$\Omega$ system if a 40dB amplifier is used. The amplifier is a RF broadband amplifier with 2 GHz analog bandwith. It has the advantage that you will see all single photon pulses which are extracted from the LINAC, possibly also the RF structure of the LINAC.	+	A set of photon detectors (CVD diamond film based) will be purchased and mounted on a movable platform that will sweep the detectors through the brehmmstrahlung beam measuring its profile. ~\cite{Tapper2000}
		+
		+
		+	Figure~\ref{fig:CVDdiamondDetector} show the packages detector that is available from CIVIDEC Instrumentation. The manufacturer specifications indicate that a photon flux of 10$^9$ to 10$^{12}$ photons/sec/cm$^2$ should output voltages from 50 mV to 5 V in a 50$\Omega$ system if a 40dB amplifier is used. The amplifier is a RF broadband amplifier with 2 GHz analog bandwith. It has the advantage that you will see all single photon pulses which are extracted from the LINAC, possibly also the RF structure of the LINAC.

← Older revision		Revision as of 05:12, 21 February 2013
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	\bibitem{FY2013CongBudgetOff} FY2013 Cngressionl Budget (http://science.energy.gov/~/media/budget/pdf/sc-budget-request-to-congress/fy-2013/Cong_Budget_2013_IsoptopeProductionandDistributionProgramFunding.pdf)		\bibitem{FY2013CongBudgetOff} FY2013 Cngressionl Budget (http://science.energy.gov/~/media/budget/pdf/sc-budget-request-to-congress/fy-2013/Cong_Budget_2013_IsoptopeProductionandDistributionProgramFunding.pdf)
		+	\bibitem{"Diamond detectors in particle physics" R J Tapper, Rep. Prog. Phys. 63 (2000) 1273–1316.

	\end{thebibliography}		\end{thebibliography}

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 \section{Description of Research Instrumentation and Needs (c)} ('''6 pages''')
-The Idaho Accelerator Center is currently operating a 40 MeV electron linac for the purpose of evaluating the viability of producing copper-67 as a medical isotope.   Figure ~\ref{fig:JackPlusPhotonFlux} shows the exit window of the linac.  Electrons impinging the tungsten target produce copious amounts of photons via Brehmsstrahlung.  Figure~\ref{fig:JackPlusPhotonFlux} shows the flux of photons immediately downstream of the tungsten radiator.  Samples with cross-sectional area of one square cm will be irradiated by at least 10$^{15}$ photons/sec/cm$^2$.  A flux of similar magnitude as the neutrons from reactors used to produce isotopes.  This flux is attenuated to about 10$^{12}$ photons/sec/cm$^2$ after passing through the zinc used for copper-67 production.
+The Idaho Accelerator Center is currently operating a 40 MeV electron linac for the purpose of evaluating the viability of producing copper-67 as a medical isotope.   Figure ~\ref{fig:JackPlusPhotonFlux} represents a view of the beam line looking upstream from the exit window of the linac.  Electrons impinging the tungsten target produce copious amounts of photons via Brehmsstrahlung.  Figure~\ref{fig:JackPlusPhotonFlux} shows the flux of photons immediately downstream of the tungsten radiator.  Samples with cross-sectional area of one square cm will be irradiated by at least 10$^{15}$ photons/sec/cm$^2$.  A flux of similar magnitude as the neutrons from reactors used to produce isotopes.  This flux is attenuated to about 10$^{12}$ photons/sec/cm$^2$ after passing through the zinc used for copper-67 production.
 The specific activity of isotopes produced is dependent on the sample's alignment with respect to the incident photon flux. Figure ~\ref{fig:JackPlusPhotonFlux} shows a rapid decrease of photon flux as you move half a centimeter away from the accelerator's central axis.  This sharp decrease in flux reduces can result in a decrease in activity for samples that are not aligned with the photon flux at the mm level.  Previous measurements at the IAC have observed reductions in copper-67 activities of more than 50\% when the zinc sample is misaligned by 5 mm.  A system to detect the photon flux distribution is needed to maximize the activity of isotope production.