S. Baird

Bio: S. Baird is an academic researcher from Stanford University. The author has contributed to research in topics: Linear particle accelerator & Synchrotron. The author has an hindex of 5, co-authored 8 publications receiving 48 citations.

The 3 GeV synchrotron injector for SPEAR

Abstract: A dedicated 3-GeV injector synchrotron for the storage ring SPEAR has been constructed at the Stanford Synchrotron Radiation Laboratory, SSRL. The injector consists of an RF-gun, a 120-MeV linear accelerator, a 3-GeV booster synchrotron, and associated beam transport lines. General design features and special new developments for this injector are presented, together with operational performance. >

The linac and booster RF systems for a dedicated injector for SPEAR

Abstract: A 120 MeV, 2856 MHz, traveling wave linear accelerator (linac), with a microwave gun, alpha magnet, and chopper, has been built at the Stanford Synchrotron Radiation Laboratory (SSRL) as a preinjector for and along with a 3 GeV, 358.54 MHz, booster synchrotron ring. The resulting injector will be available on demand to fill the Stanford Positron-Electron Accelerator Ring (SPEAR), which is a storage ring now dedicated to synchrotron light production. A description is given of the injector's two separate and different frequency RF systems. Synchronization of the two, non-harmonic systems is achieved through the linac's chopper. Some of the interesting mechanical and electrical details are discussed and the operating characteristics of the linac and ring RF are highlighted. >

The SSRL injector beam position monitoring systems

Abstract: The authors describe the software and processing electronics of the systems used to measure electron beam trajectories for the new Stanford Synchrotron Radiation Laboratory (SSRL) injector and for the Stanford Positron Electron Accelerator Ring (SPEAR). The focus is on the use of the electron beam position monitors (BPMs) to measure electron trajectories in the injector transport lines and the booster ring. There are three different BPM systems in the injector. One system consists of a set of five BPMs located on the injection transport line from the linac to the booster. There is a second system of six BPMs located on the ejection transport line. Finally, there is an array of 40 BPMs installed on the main booster ring itself. The injector beam position monitor systems have successfully been used to measure electron orbits and to diagnose configuration problems. The booster BPM system has proved capable of measuring orbits at intervals of 2 milliseconds during the ramp every two seconds. >

Commissioning the SSRL injector

Abstract: The SSRL injector has been commissioned and already fills SPEAR (Stanford Positron Electron Asymmetric Ring) at rates which are comparable to those obtained using the SLAC (Stanford Linear Accelerator Center) linac. The design goals for the injector are presented along with the best achieved performance levels and routine performance levels. >

The 3 GeV synchrotron injector for SPEAR

Abstract: A dedicated 3-GeV injector synchrotron for the storage ring SPEAR has been constructed at the Stanford Synchrotron Radiation Laboratory, SSRL. The injector consists of an RF-gun, a 120-MeV linear accelerator, a 3-GeV booster synchrotron, and associated beam transport lines. General design features and special new developments for this injector are presented, together with operational performance. >

Design and performance of the traveling-wave beam chopper for the SSRL injector

Abstract: A pulsed, split-parallel plate chopper has been designed, built, and installed as part of the preinjector of the Stanford Synchrotron Radiation Laboratory (SSRL) injector. Its function is to allow into the linear accelerator (linac) three consecutive S-band bunches from the long bunch train provided by an RF gun. A permanent magnet deflector (PMD) at the chopper entrance deflects the beam into an absorber when the chopper pulse is off. The beam is swept across a pair of slits at the beam output end when a 7 kV, 10 ns rise-time pulse passes in the opposite direction through the 75 Omega stripline formed by the deflecting plates. Bunches exiting the slits have their trajectories corrected by another PMD, and enter the linac. Beam tests demonstrate that the chopper functions as expected. >

The linac and booster RF systems for a dedicated injector for SPEAR

Abstract: A 120 MeV, 2856 MHz, traveling wave linear accelerator (linac), with a microwave gun, alpha magnet, and chopper, has been built at the Stanford Synchrotron Radiation Laboratory (SSRL) as a preinjector for and along with a 3 GeV, 358.54 MHz, booster synchrotron ring. The resulting injector will be available on demand to fill the Stanford Positron-Electron Accelerator Ring (SPEAR), which is a storage ring now dedicated to synchrotron light production. A description is given of the injector's two separate and different frequency RF systems. Synchronization of the two, non-harmonic systems is achieved through the linac's chopper. Some of the interesting mechanical and electrical details are discussed and the operating characteristics of the linac and ring RF are highlighted. >

The SSRL injector beam position monitoring systems

Abstract: The authors describe the software and processing electronics of the systems used to measure electron beam trajectories for the new Stanford Synchrotron Radiation Laboratory (SSRL) injector and for the Stanford Positron Electron Accelerator Ring (SPEAR). The focus is on the use of the electron beam position monitors (BPMs) to measure electron trajectories in the injector transport lines and the booster ring. There are three different BPM systems in the injector. One system consists of a set of five BPMs located on the injection transport line from the linac to the booster. There is a second system of six BPMs located on the ejection transport line. Finally, there is an array of 40 BPMs installed on the main booster ring itself. The injector beam position monitor systems have successfully been used to measure electron orbits and to diagnose configuration problems. The booster BPM system has proved capable of measuring orbits at intervals of 2 milliseconds during the ramp every two seconds. >