Beam profile wire-scanner/halo-scraper sensor analog interface electronics
Abstract
The halo experiment presently being conducted at the Low Energy Demonstration Accelerator (LEDA) at Los Alamos National Laboratory utilizes a generally traditional wire scanner for measurement of the beam core profile and a graphite scraper for measurement of the tails of the beam distribution. A lossy integrator is used to detect the replacement charge flowing to the wire and scraper. Independent programmable dc-bias voltages are applied to the wire and the scraper through the analog electronic interface to optimize charge capture from the two sensors. A programmable guard voltage is applied to isolate the scraper from the resistivity of the cooling system. Programmable gain provides a total dynamic range in the analog electronics of greater than about one part in 10{sup 6}. The analog signal is digitized to 14 bits plus sign, and the equivalent input noise is nominally 30fC.
- Authors:
-
- James F.
- Dean S.
- Lisa A.
- John Douglas
- Matthew W.
- Derwin G.
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 975344
- Report Number(s):
- LA-UR-01-2912
TRN: US1002432
- Resource Type:
- Conference
- Resource Relation:
- Journal Volume: 3; Conference: "Submitted to: 2001 Particle Accelerator Conference, Chicago, IL, June 18-22, 2001."
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; ACCELERATORS; BEAM PROFILES; COOLING SYSTEMS; DISTRIBUTION; GRAPHITE; LANL; SCRAPERS
Citation Formats
Gruchalla, M E, O'Hara, J F, Barr, D S, Day, L A, Gilpatrick, J D, Stettler, M W, and Martinez, D G. Beam profile wire-scanner/halo-scraper sensor analog interface electronics. United States: N. p., 2001.
Web. doi:10.1109/PAC.2001.987363.
Gruchalla, M E, O'Hara, J F, Barr, D S, Day, L A, Gilpatrick, J D, Stettler, M W, & Martinez, D G. Beam profile wire-scanner/halo-scraper sensor analog interface electronics. United States. https://doi.org/10.1109/PAC.2001.987363
Gruchalla, M E, O'Hara, J F, Barr, D S, Day, L A, Gilpatrick, J D, Stettler, M W, and Martinez, D G. 2001.
"Beam profile wire-scanner/halo-scraper sensor analog interface electronics". United States. https://doi.org/10.1109/PAC.2001.987363. https://www.osti.gov/servlets/purl/975344.
@article{osti_975344,
title = {Beam profile wire-scanner/halo-scraper sensor analog interface electronics},
author = {Gruchalla, M E and O'Hara, J F and Barr, D S and Day, L A and Gilpatrick, J D and Stettler, M W and Martinez, D G},
abstractNote = {The halo experiment presently being conducted at the Low Energy Demonstration Accelerator (LEDA) at Los Alamos National Laboratory utilizes a generally traditional wire scanner for measurement of the beam core profile and a graphite scraper for measurement of the tails of the beam distribution. A lossy integrator is used to detect the replacement charge flowing to the wire and scraper. Independent programmable dc-bias voltages are applied to the wire and the scraper through the analog electronic interface to optimize charge capture from the two sensors. A programmable guard voltage is applied to isolate the scraper from the resistivity of the cooling system. Programmable gain provides a total dynamic range in the analog electronics of greater than about one part in 10{sup 6}. The analog signal is digitized to 14 bits plus sign, and the equivalent input noise is nominally 30fC.},
doi = {10.1109/PAC.2001.987363},
url = {https://www.osti.gov/biblio/975344},
journal = {},
number = ,
volume = 3,
place = {United States},
year = {Sun Apr 01 00:00:00 EST 2001},
month = {Sun Apr 01 00:00:00 EST 2001}
}