I submit for your consideration my application for promotion to the rank of Full Professor at Idaho State University (ISU). This cover letter is intended to introduce the general aspects of my career at ISU that are more fully described in the promotion application package.
I joined ISU as a tenure track Research Associate Professor on August 14, 2006. I was fortunate to join a department that is focused on my discipline, nuclear physics, and is associated with a dedicated research facility, the Idaho Accelerator Center (IAC). I was awarded tenure at ISU on March 15, 2011. The Dean of the College of Science and Engineering changed my position to a tenured Associate Professor to align my “skills and efforts with the needs of the College of Science and Engineering and the funding available” on October 29, 2013. As a result, my teaching and research duties became commensurate with a regular academic faculty position in the Physics Department at ISU.
My teaching career at ISU was primarily focused on graduate education and has only in the last two years been expanded to include undergraduate classes. I developed four new graduate level courses at ISU. Two of these have been adapted so they may be cross listed as senior level undergraduate courses that are now offered to students every year. My student evaluations have consistently been between the “good” and “excellent” rating each year.
I established the Laboratory for Detector Science at ISU to teach students the art of detector development and to facilitate the construction of detectors for research. I used this facility to design, construct, and test detector systems for research at the Thomas Jefferson National Accelerator Facility (JLab) managed by the Department of Energy in Newport News, Va. A project to construct five drift chambers for the detector upgrade in JLab’s Hall B was successfully completed recently. The detectors have been delivered to JLab and shown to be functioning normally. In addition to students, the project trained three people from the Pocatello area who moved on to technical jobs at ON semiconductor. Three Ph. D. students have used the facility to complete their graduate studies.
My research program at ISU investigates both fundamental physics as well as physics applications. My work at Jefferson Lab is focused on using polarized electrons to probe the quark contribution to polarized nucleon observables. While my main focus was an evaluation of the duality principle for polarized structure functions, I have also been one of the main contributors to the collection and analysis of polarized structure function data for Hall B’s EG1 group at JLab. I am currently preparing to continue those measurements with a focus on measuring the fractional down quark polarization in the nucleon using the energy upgraded accelerator at JLab and Hall B’s detectors. This research program has been continuously funded by the National Science foundation since I started my second year at ISU in 2007.
My work in physics applications has been in the area of positron production using electron accelerators. I was awarded a grant to investigate the efficiency of producing positrons using a 10 MeV incident electron beam at the IAC. The research complimented my work in the Polarized Electron for Polarized Positrons (PEPPo) experiment using JLab’s injector. The goal at the IAC was to investigate positron production efficiency using a quad triplet collection system while the goal of the PEPPo experiment was to quantify the polarization transferred to positrons produced using an incident polarized electron beam. The results indicate that at least one polarized positron can be collected and transported for every million electrons that impinge a thin Tungsten target. This work is continuing at ISU as an SBIR initiative and can be used to develop a polarized positron source that will facilitate charge symmetry measurements at Jefferson Lab.
I have left further details of my teaching, research, and service to the relevant sections of the promotion application form. I offer this dossier for your consideration of my application for promotion to Full Professor at Idaho State University.
|Year||Semester||Course #||Course Description|
|2006||Fall||PHYS 499/599||SIM. OF PART. INTER. W/MATTE|
|2006||Spring||PHYS 499/599||NUCLEAR PHYSICS OF HOMELAND SEC|
|2007||Fall||PHYS 599||SIM. OF PART. INTER. W/MATTE|
|2008||Spring||PHYS 609||ADVANCED NUCLEAR PHYSICS|
|PHYS 648||SPECIAL TOPICS|
|2008||Fall||PHYS 599||SIM. OF PART. INTER. W/MATTE|
|PHYS 648||SPECIAL TOPICS|
|2009||Spring||PHYS 609||ADVANCED NUCLEAR PHYSICS|
|PHYS 648||SPECIAL TOPICS|
|2009||Fall||PHYS 499/599||SIM. OF PART. INTER. W/MATTE|
|Tamar Didberidze||Ph.D Physics||A Test of Independent Fragmentation|
|Sadiq||Ph.D Physics||Positron source for JLab|
|Abdel Haitham||Ph.D Physics||A Thick GEM neutron detector|
|Warren Parsons||M.S. Physics||A Gaseous Detector Readout System for Qweak|
|Randy Spaulding||M.S. Physics||Design Fundamentals for Cost-Optimized Neutron Detectors Based on an Array of Helium-3 Tubes|
Simulations , Adv. Nuclear, Nucl Physics for Homeland Security, and Analysis for the Physical Sciences.
Patterned after the peer instruction method, I have adopted a method of instruction which integrates a lbaoratory environment directly into the lecture. The simulation class is configured to be a once a week 3 hour block of time in which the first 1-1.5 hours is spent in a traditional lecture style mode which describes concepts. The next half of the class is spent by the student applying those concepts in a laboratory environment under the supervision of the instructor. The laboratory environment will task the student to implement the concepts from the lecture into a working simulation and evaluate the veracity of the simulation in reproducing the physical concept.
The second class on Error analysis was configured to be similar to the SImulation class. The error analysis class was held twice a week with at least 1 hour devoted to conceptual description and the remainder devoted to practicing the concepts on the computer. The lab portion of the class however was a shorter and more focused to be completed in a 15-20 minute time period.
wiki, computer lab integration
Error analysis course
A majority of my research has involved asymmetry measurements using polarized electrons. My Ph. D. thesis reported a measurement of the neutral weak magnetic form factor of the proton using parity violation at MIT bates <ref name="SAMPLE"> Template:Cite Measurement of the Proton's Neutral Weak Magnetic Form Factor, B. Mueller et. al. , Phys. Rev. Lett. 78, (1997), 3824</ref>. My post graduate work focused on asymmetry measurements using polarized electrons and polarized nucleons to extract polarized structure functions at Jefferson Lab. As a faculty member at ISU, I continued polarized structure function measurements and I have branched out to include physics applications research at the Idaho Accelerator Center. The highlights of this work are described below.
Even though measurements of polarized structure functions have been taking place for more than three decades, with substantial improvements in target polarization and kinematic coverage, fundamental questions remain unanswered yet within reach. Earlier experiments demonstrated that the quarks in a nucleon are not the main contributers to the spin of a nucleon. Contributions from gluons and the angular momentum of a nucleon's constituents have become the focus of investigation for more than a decade. The polarized structure function measurements I participated in have helped to further constrain the uncertainty in measurements of the gluon contribution. I plan to continue these measurements (E12-06-109) with the upgraded facility at Jefferson Lab as it has become clear that the statistical and systematic uncertainties in the analysis used to extract the gluon contributions will benefit from a data set taken with an apparatus that has a large kinematic coverage.
My main contribution to polarized structure function research thus far has been testing the concept of quark-hadron duality, in addition my work supporting my fellow collaborators. Quark-hardron duality postulates that the resonance region in inelastic electron scattering can have observables that, on average, are quantitatively similar to those produced in the non resonant scattering region. The polarized structure function , g_1, was such an observable that I measured in the resonant and non-resonant region to test the concept of quark-hadron duality. My published results on the test showed that g_1, when averaged in the resonance region, was consistent with the same average using deep inelastic structure function data when the four momentum transfer squared (Q^2) was larger than 1.7 GeV^2/c^2. It also appears that the onset of quark-hadron duality for polarized structure functions occurs at a higher Q^2 than if an analagous comparison were made using unpolarized structure functions.
One of the main reasons I came to ISU was the availability of a local electron accellerator facility at the Idaho Accelerator Center. At first, I used the IAC to test detectors and measure radiation damage of detector materials. I then found an opportunity to develop a positron source at the IAC that had the potential to advance a program of charge symmetry based experiments at Jefferson Lab. Experiments using both positrons and electrons have the potential to remove model dependencies. For example, a measurement of polarized electron and proton scattering from a polarized nucleon target has the potential to be a model independent measurement of a nucleon's electromagnetic form factors. Such a measurement has the potential to reconcile the current discrepancy between cross-section based and polarization transfer based measurements of these form factors.
I received an award to measure the efficiency of producing positrons in a Tungsten target from the bremmstrahlung photons produced by a 10 MeV incident electron beam. An achromatic beam line was designed, constructed, and instrumented to collect positrons emmitted by the downstream side of the tungsten target using a quard triplet. t least one positron was produced for every million electrons impinging the target. The work is documented in a Ph.D. thesis at ISU. The work also led to performing a similar measurement as part of the Polarized Electron Polarized Position (PEPPo) collaboration using the JLab injector during the accelerator upgrade. The PEPPo experiment's main goal was to determine the polarization transferred to the positron from the polarized electron. The results are in final preparation for release.
My current efforts are focused on using JLab's upgraded Hall B to measure the fractional down quark polarization in the nucleon. I will use the CLAS12 detector in Jefferson Lab's Hall B to measure the cross-section helicity differences for positive and negative pion production from a polarized proton and deuteron. This combination of measurements will allow an extraction of the down quark polarization as a function of how large a fraction of the nucleon's momentum was carried by the struck quark. Perturbative quantum chromodynamics predicts that the down quarks will carry all of the nucleon's polarization if they carry all of its momentum. A modern quark model, with hyperfine interactions, predicts that the down quark's polarization contribution will oppose the nucleon's net polarization. The planned measurements should discriminate between these contradictory predictions with a statistical precision of two standard deviations.
- A Precise Measurement of the Neutron Magnetic Form Factor G**n(M)in the Few-GeV**2 Region, J. Lachniet et al., Phys. Rev. Lett., 102 ,(2009), 192001.
- First measurement of direct f0(980) photoproduction on the proton M. Battaglieri et al., Phys. Rev. Lett., 102 , (2009), 102001.
- Electroproduction of p pi+ pi- off protons at 0.2 < Q**2 < 0.6-GeV**2 and 1.3 < W < 1.57-GeV with CLAS. G.V. Fedotov, et al., Phys. Rev. C79, (2009), 015204.
- Exclusive rho0 electroproduction on the proton at CLAS S.A. Morrow et al., Eur. Phys. J., A39 ,(2009), 5.
- Search for the photo-excitation of exotic mesons in the pi+ pi+ pi- system M. Nozar et al., Phys. Rev. Lett., 102, (2009), 102002.
- Moments of the Spin Structure Functions g**p(1) and g**d(1) for 0.05 < Q**2 < 3.0-GeV**2., Y. Prok et al., Phys.Lett, B672 ,(2009) ,12.
- First measurement of target and double spin asymmetries for polarized-e polarized-p ---> e p pi0 in the nucleon resonance region above the Delta(1232) A.S. Biselli et al., Phys. Rev. , C78, (2008), 045204.
- Deeply Virtual Compton Scattering Beam-Spin Asymmetries., F.X. Girod et al. (The CLAS Collaboration), Phys. Rev. Lett., 100 , (2009), 162002.
- Beam spin asymmetry in deep and exclusive p0 electroproduction., R. De Masi et al. (The CLAS Collaboration), Phys. Rev. C 77, (2008), 042201.
- A Bayesian analysis of pentaquark signals from CLAS data., D. G. Ireland et al. (The CLAS Collaboration), Phys. Rev. Lett. 100, 052001 (2008).
- Cross Sections for gamma p to K0*+ Sigma at Egamma=1.7-3.0 GeV , I. Hleiqawi, et. al., Phys. Rev. C 75,(2007), 042201.
- Separated Structure Functions for the Exclusive electroproduction of K+ Lambda and K+ Sigma Final States , P. Ambrozewicz, et. al., Phys. Rev. C 75,(2007), 045203.
- First measurement of Beam Recoil Observables C(x) and C(z) in hyperon Photoproduction , R. Bradford, et. al., Phys. Rev. C 75, (2007), 035205.
- Quark-Hadron Duality in Spin Structure Functions g1p and g1d , P. Bosted, et. al., Phys. Rev. C 75, (2007), 035203.
- Measurement of the x and Q^2 Dependence of the Spin Asymmetry A1 on the Nucleon , K.V. Dharmawardane, et. al., Phys. Lett. B 641, (2006),11.
Books and Proceeding
- "International Workshop on Positrons at Jefferson Lab", T.A. Forest Editor, Newport News, VA, March 2009.
- "An Accelerator Based Cargo Container Inspection System for Nuclear Materials", T.A. Forest et. al., pg 470, Eight International Topical Meeting on Nuclear Applications and Utilization of Accelerators (ACCAPP'07), Pocatello, ID, July 29-August 2, 2007, Published by the American Nuclear Society
Prior to arriving at ISU
- Onset of asymptotic scaling in deuteron photodisintegration , P. Rossi, et. al., Phys. Rev. Lett. 94, (2005), 012301.
- Exclusive rho0 meson electroproduction from hydrogen at CLAS , C. Hadjidakis, et. al., Phys. Lett. B605, (2005), 256.
- A_LT' asymmetries in semi-exclusive electron scattering on He4 and C12 D. Protopopescu, et al. , Nucl.Phys. A748 (2005) 357-373.
- Experimental Determination of the Evolution of the Bjorken Integral at Low Q2 Deur, et. al., Phys. Rev. Lett. 93, (2004), 212001.
- Complete measurement of three-body photodisintegration of 3He for photon energies between 0.35 and 1.55 GeV, S. Niccolai, et.al., Phys. Rev. C 70, (2004), 064003.
- Measurement of the Polarized Structure Function sigma(LT') for p(e(vec),e'pi+)n in the Delta resonance region, K. Joo, et.al., Phys. Rev. C 70, (2004), 042201R.
- Proton source size measurements in the eA --> e'ppX reaction, A.V. Stavinsky, et. al. , Phys. Rev. Lett. 93 (2004),192301.
- Complete Angular Distribution Measurements of Two-Body Deuteron Photodisintegration between 0.5 and 3 GeV, M. Mirazita, et. al., Phys. Rev. C 70, (2004), 014005.
- Tensor Polarization of the phi meson Photoproduced at High t, K. McCormick, et. al., Phys. Rev. C 69, (2004), 032203.
- Observation of an exotic baryon with S=+1 in photoproduction from the proton,V. Kubarovsky, et. al., Phys. Rev. Lett.92 , (2004),032001.
- Two-nucleon momentum distributions measured in 3 He(e, e' p p )n,Niyazov and Weinstein, Phys. Rev. Lett,92 , (2004), 052303.
- Observation of an Exotic S=+1 Baryon in Exclusive Photoproduction from the Deuteron,S. Stepanyan, et. al., Phys. Rev. Lett.91 , (2003), 252001.
- Measurement of the Proton Spin Structure Function g1(x,Q2) for Q2 from 0.15 to 1.6 GeV2 with CLAS, R.Fatemi, et. al., Phys. Rev. Lett., 91, (2003), 222002.
- Polarization transfer in the 4He(e,e'p) 3H reaction up to Q2= 2.6(GeV/c)2, S. Strauch, et. al., Phys. Rev. Lett., 91, (2003), 052301.
- First Measurement of Transferred Polarization in the Exclusive e(pol)p = -> e'K+Lambda(pol) Reaction, D. Carman, et al., Phys. Rev. Lett., 90, (2003), 131804.
- Measurement of Beam-Spin Aasymmetries for Deep Inelastic pi+ Electroproduction , H. Avakian, et al., Phys. Rev. , D69, (2004), 112004.
- Measurement of Inclusive Spin Structure Fuctions of the Deuteron with CLAS, J. Yun, S. Kuhn, G. Dodge, T.A. Forest, et al., Phys. Rev. C67, (2003), 055204.
- Q2 Dependence of Quadrupole Strength in gamma*->Delta(1232)}, K. Joo et. al., Phys.Rev.Lett. 88, (2002), 122001.
- First Measurement of the Double Spin Asymmetry in e(pol)p(pol)->e'pi+n in the Resonance Region, R. DeVita et. al., Phys.Rev.Lett. 88, (2002), 082001.
- First observation of exclusive DVCS in polarized electron beam asymmetry measurements, S. Stepanyan et. al., Phys.Rev.Lett. 87, (2001), 182002.
- Photoproduction of the rho0 meson on the proton at large momentum transfer, M. Battaglieri et.. al., Phys. Rev. Lett. 87, (2001), 172002.
- Electroproduction of the Lambda(1520) Hyperon, S. Barrow et. al., Phys. Rev. C 64, (2001), 044601.
- Exclusive electroproduction of phi mesons at 4.2 GeV, K. Lukashin et. al., Phys. Rev. C 63, (2001), 065205.
- Photoproduction of phi(1020) Mesons on the Proton at Large Momentum Transfer, E. Anciant et. al. , Phys. Rev. Lett. 85 , (2000), 4682.
- Coherent pi0 Photoproduction on the Deuteron up to 4.0 GeV, D.G. Meekins et. al. , Phys. Rev. C 60 , (1999), 52201.
- Measurements of Deuteron Photodisintegration up to 4.0 GeV, C. Bochna et. al. , Phys. Rev. Lett. 81, (1998), 4576.
- Measurement of the Proton's Neutral Weak Magnetic Form Factor, B. Mueller et. al. , Phys. Rev. Lett. 78, (1997), 3824.
- A High Power Hydrogen Target for Parity Violation Experiments, E. J. Beise, D. H. Beck, E. Candell, R. Carr, F. Duncan, T. Forest, W. Korsch, J. W. Mark, R. D. McKeown, B. A. Mueller, S. Wells , Nucl. Instrum. Meth. A378, (1996), 383.
- Threshold Eta Photoproduction, A.S. Rosenthal, T.A. Forest, and M. Gonzales, Phys. Rev. C 44, (1991), 2765.
- The Distribtuion of Supernova Remnants in the Large Magellanic Cloud, T.A. Forest, et. al., Publ. Astron. Soc. Pac. 100, 683 (1988).
Books and Proceeding
- "Quark hadron duality tests on polarized structure functions using CLAS.", T.A. Forest (for the CLAS collaboration), 3rd International Symposium on the Gerasimov-Drell-Hearn Sum Rule and its Extensions (GDH 2004), Norfolk, Virginia, 2-5 Jun 2004. Published in *Norfolk 2004, Gerasimov-Drell-Hearn sum rule and its extensions* 84-92.
- "The Q**2 dependence of polarized structure functions.", T.A. Forest (for the CLAS collaboration), 9th International Conference on the Structure of Baryons (Baryons 2002), Newport News, Virginia, 3-8 Mar 2002. Published in *Newport News 2002, Baryons 2002* 303-306.
- NSF Award Id : PHY-0855661, $910k, 9/15/2009 - 8/31/2012
- NSF Award Id :PHY- 0653570, $152k, 8/15/2007 - 7/31/2009
- CLAS12 R3 ME Design, JLAB sub contract, $64k, 5/28/07 - 9/19/08
- Endplate Deflections, JLAB sub contract, $6k, 1/1/07-2/2/07
- LaTech GEM, Louisiana Tech subcontract, $47k, 11/1/07-2/1/08
- A&T GEM, North Carolina A&T State University sub contract, $5k, 9/1/06-3/1/07
Presentations at Conferences and General Audiences
Department, College, and University activities
Faculty Senate (2008-present)
Qualifying exam committee (2007-2010)
JLab hiring Committee (both times)
New Physics hire
Engineering Ph. D. Committee ( ended in 2007-2009)
ISU colloquium 1/12/2010
Professional Service Activities
NSF proposal reviewer 2010. Two proposals.
Positron workshop proceedings editor
APS article about homeland security on pg 6 of the December 2009 issue.
REU program ( 2009,2010)
Outreach at Syringa school