Author: Kim, Y.
Paper Title Page
MOPPR087 Transverse Beam Emittance Measurements of a 16 MeV Linac at the Idaho Accelerator Center 990
  • S. Setiniyaz, T.A. Forest
    ISU, Pocatello, Idaho, USA
  • K. Chouffani, Y. Kim
    IAC, Pocatello, IDAHO, USA
  • A. Freyberger
    JLAB, Newport News, Virginia, USA
  A beam emittance measurement of the 16 MeV S-band High Repetition Rate Linac (HRRL) was performed at Idaho State University's Idaho Accelerator Center (IAC). The HRRL linac structure was upgraded beyond the capabilities of a typical medical linac so it can achieve a repetition rate of 1 kHz. Measurements of the HRRL transverse beam emittance are underway that will be used to optimize the production of positrons using HRRL's intense electron beam on a tungsten converter. In this paper, we describe a beam imaging system using on an OTR screen and a digital CCD camera, a MATLAB tool to extract beamsize and emittance, detailed measurement procedures, and the measured transverse emittances for an arbitrary beam energy of 15 MeV.  
TUPPC055 Development of an Automatic MATLAB based Emittance Measurement Tool for the IAC Accelerators 1296
  • C.F. Eckman, A. Andrews, Y. Kim, S. Setiniyaz, D.P. Wells
    IAC, Pocatello, IDAHO, USA
  • A.W. Hunt
    ISU, Pocatello, Idaho, USA
  At the Idaho Accelerator Center (IAC) of Idaho State University, we have been operating fifteen low energy accelerators. To optimize those accelerators properly, we have to measure the transverse beam emittance. To measure the transverse beam emittance of an S-band linear accelerator with the quadrupole scan technique, we installed an Optical Transition Radiation (OTR) screen and a digital CCD camera in the bealime of the accelerator. From the images of the digital CCD camera, the transverse beam profile on the OTR screen can be acquired. To extract the transverse beam size and to estimate the transverse emittance, we have developed a MATLAB program. This paper describe the details of the MATLAB program and performance of our MATLAB based emittance measurement tool.  
WEPPR041 Design of a Compact Linear Accelerator for the Ultrafast Electron Diffraction Facility 3027
  • M. Mamtimin, A.W. Hunt, Y. Kim, D.P. Wells
    IAC, Pocatello, IDAHO, USA
  Ultrafast Electron Diffraction (UED) is a powerful tool to find 3-dimensional structures and dynamical transitions of chemical or biological samples with a femtosecond-range temporal resolution and an angstrom-range spatial resolution. Due to the columbic field of electrons, UED can provide a higher cross section and a higher time resolution than those of the ultrafast photon diffraction with X-ray Free Electron Lasers (XFELs). In this paper, we describe the design concepts and ASTRA simulation results of a compact linac for an UED facility.  
THPPR017 The First Development of an EPICS Control System for the IAC Accelerators 4002
  • A. Andrews, C.F. Eckman, A.W. Hunt, Y. Kim, D.P. Wells
    IAC, Pocatello, IDAHO, USA
  • K.H. Kim
    SLAC, Menlo Park, California, USA
  At the Idaho Accelerator Center (IAC) of Idaho State University, we have been operating 15 low energy accelerators for nuclear physics applications and medical isotope production. But those accelerator do not have good computer based system to control the various accelerator components remotely. To obtain stable accelerator operations with a good reproducibility, we adapted the EPICS accelerator control system. After developing one full set of the EPICS accelerator control system for various components, we will apply the same EPICS control system for all other operating accelerators at the IAC. Since January 2011, we have been developing an EPICS control system for a 16 MeV S-band linac by collaborating with SLAC control group. In this paper, we describe our first EPICS accelerator control system to control magnet power supplies of the S-band linac at the IAC.  
TUPPD079 Design of an L-Band RF Photoinjector for the Idaho Accelerator Center 44 MeV Linac 1584
  • M. Titberidze, A.W. Hunt, D.P. Wells
    IAC, Pocatello, IDAHO, USA
  • Y. Kim
    ISU, Pocatello, Idaho, USA
  At the Idaho Accelerator Center (IAC) of Idaho State University, we have been operating a 44 MeV L-band RF (1300 MHz) linear accelerator (LINAC) for various user applications such as medical isotope production, Laser Compton Scattering (LCS), positron annihilation energy spectroscopy, and photo fission. But the LINAC is not optimized properly to supply high quality electron beam for those experiments due to limitations of an existing 85 kV thermionic DC gun. In the near future, we are planning to use the L-band LINAC for new user applications such as Accelerator Driven subcritical nuclear reactor System (ADS), photon tagging facility, Ultrafast Electron Diffraction (UED) facility, and high power coherent Terahertz light source facility. Therefore, recently, we have been studying a future upgrade of the L-band LINAC with an RF photoinjector using ASTRA code. In this paper, we describe ASTRA simulation results and a new layout of the L-band LINAC, which is based on an L-band 1.5 cell RF photoinjector. Then, we describe its expected performance for two different single bunch charges (1 nC and 5 nC).