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Title: The Abort Kicker System for the PEP-II Storage Rings at SLAC.

Abstract

The PEP-II project has two storage rings. The HER (High Energy Ring) has up to 1.48 A of election beam at 9 GeV, and the LER (Low Energy Ring) has up to 2.14 A of positron beam at 3.1 GeV. To protect the HER and LER beam lines in the event of a ring component failure, each ring has an abort kicker system which directs the beam into a dump when a failure is detected. Due to the high current of the beams, the beam kick is tapered from 100% to 80% in 7.33 {micro}S (the beam transit time around the ring). This taper distributes the energy evenly across the window which separates the ring from the beam dump such that the window is not damaged. The abort kicker trigger is synchronized with the ion clearing gap of the beam allowing for the kicker field to rise from 0-80% while there is no beam in the kicker magnet. Originally the kicker system was designed for a rise time of 370nS [1], but because the ion clearing gap was reduced in half, so was the rise time requirement for the kicker. This report discusses the design of the system interlocks, diagnostics,more » and modulator with the modifications necessary to accommodate an ion clearing gap of 185nS.« less

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
813175
Report Number(s):
SLAC-PUB-10011
TRN: US0303731
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: Presented at the 2003 Pulsed Power Conference, Dallas, TX, (US), 06/15/2003--06/18/2003; PBD: 20 Jun 2003
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM DUMPS; DESIGN; INTERLOCKS; KICKER MAGNETS; MODIFICATIONS; POSITRON BEAMS; PULSE RISE TIME; STANFORD LINEAR ACCELERATOR CENTER; STORAGE RINGS

Citation Formats

Delamare, Jeffrey E. The Abort Kicker System for the PEP-II Storage Rings at SLAC.. United States: N. p., 2003. Web. doi:10.2172/813175.
Delamare, Jeffrey E. The Abort Kicker System for the PEP-II Storage Rings at SLAC.. United States. doi:10.2172/813175.
Delamare, Jeffrey E. Fri . "The Abort Kicker System for the PEP-II Storage Rings at SLAC.". United States. doi:10.2172/813175. https://www.osti.gov/servlets/purl/813175.
@article{osti_813175,
title = {The Abort Kicker System for the PEP-II Storage Rings at SLAC.},
author = {Delamare, Jeffrey E},
abstractNote = {The PEP-II project has two storage rings. The HER (High Energy Ring) has up to 1.48 A of election beam at 9 GeV, and the LER (Low Energy Ring) has up to 2.14 A of positron beam at 3.1 GeV. To protect the HER and LER beam lines in the event of a ring component failure, each ring has an abort kicker system which directs the beam into a dump when a failure is detected. Due to the high current of the beams, the beam kick is tapered from 100% to 80% in 7.33 {micro}S (the beam transit time around the ring). This taper distributes the energy evenly across the window which separates the ring from the beam dump such that the window is not damaged. The abort kicker trigger is synchronized with the ion clearing gap of the beam allowing for the kicker field to rise from 0-80% while there is no beam in the kicker magnet. Originally the kicker system was designed for a rise time of 370nS [1], but because the ion clearing gap was reduced in half, so was the rise time requirement for the kicker. This report discusses the design of the system interlocks, diagnostics, and modulator with the modifications necessary to accommodate an ion clearing gap of 185nS.},
doi = {10.2172/813175},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jun 20 00:00:00 EDT 2003},
month = {Fri Jun 20 00:00:00 EDT 2003}
}

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