Reducing emittance of a H- beam in a solenoid-based low-energy beam transport through numerical modeling

Javier Von Stecher; Seth A. Veitzer; Brian T. Schwartz; David L. Bruhwiler; Baoxi Han; Martin P. Stockli

Reducing emittance of a H^- beam in a solenoid-based low-energy beam transport through numerical modeling

Javier Von Stecher, Seth A. Veitzer, Brian T. Schwartz, David L. Bruhwiler, Baoxi Han, Martin P. Stockli

Front End Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A solenoid-based low-energy beam transport (LEBT) subsystem is under development for the H^- linac front end of the Spallation Neutron Source. The LEBT design includes MHz-frequency chopping of a partially neutralized H^- beam that can potentially lead to beam instabilities. We report results of numerical modeling using the parallel VSim [1] framework for 3D electrostatic particle-in-cell (PIC) to simulate H^- beam dynamics in the LEBT, over multiple chopping events. We detail how the addition of a positively biased potential barrier near the entrance of the chopper can improve LEBT performance by eliminating chopper-induced emittance increases over many chopping events.

Original language	English
Title of host publication	IPAC 2013
Subtitle of host publication	Proceedings of the 4th International Particle Accelerator Conference
Pages	2000-2002
Number of pages	3
State	Published - 2013
Event	4th International Particle Accelerator Conference, IPAC 2013 - Shanghai, China Duration: May 12 2013 → May 17 2013

Publication series

Name	IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference

Conference

Conference	4th International Particle Accelerator Conference, IPAC 2013
Country/Territory	China
City	Shanghai
Period	05/12/13 → 05/17/13

Cite this

Von Stecher, J., Veitzer, S. A., Schwartz, B. T., Bruhwiler, D. L., Han, B., & Stockli, M. P. (2013). Reducing emittance of a H^- beam in a solenoid-based low-energy beam transport through numerical modeling. In IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference (pp. 2000-2002). (IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference).

@inproceedings{d79a67b184454c96b702cacb38d80d00,

title = "Reducing emittance of a H- beam in a solenoid-based low-energy beam transport through numerical modeling",

abstract = "A solenoid-based low-energy beam transport (LEBT) subsystem is under development for the H- linac front end of the Spallation Neutron Source. The LEBT design includes MHz-frequency chopping of a partially neutralized H- beam that can potentially lead to beam instabilities. We report results of numerical modeling using the parallel VSim [1] framework for 3D electrostatic particle-in-cell (PIC) to simulate H- beam dynamics in the LEBT, over multiple chopping events. We detail how the addition of a positively biased potential barrier near the entrance of the chopper can improve LEBT performance by eliminating chopper-induced emittance increases over many chopping events.",

author = "{Von Stecher}, Javier and Veitzer, {Seth A.} and Schwartz, {Brian T.} and Bruhwiler, {David L.} and Baoxi Han and Stockli, {Martin P.}",

year = "2013",

language = "English",

isbn = "9783954501229",

series = "IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference",

pages = "2000--2002",

booktitle = "IPAC 2013",

note = "4th International Particle Accelerator Conference, IPAC 2013 ; Conference date: 12-05-2013 Through 17-05-2013",

}

Von Stecher, J, Veitzer, SA, Schwartz, BT, Bruhwiler, DL, Han, B & Stockli, MP 2013, Reducing emittance of a H^- beam in a solenoid-based low-energy beam transport through numerical modeling. in IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference. IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference, pp. 2000-2002, 4th International Particle Accelerator Conference, IPAC 2013, Shanghai, China, 05/12/13.

Reducing emittance of a H^- beam in a solenoid-based low-energy beam transport through numerical modeling. / Von Stecher, Javier; Veitzer, Seth A.; Schwartz, Brian T. et al.
IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference. 2013. p. 2000-2002 (IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Reducing emittance of a H- beam in a solenoid-based low-energy beam transport through numerical modeling

AU - Von Stecher, Javier

AU - Veitzer, Seth A.

AU - Schwartz, Brian T.

AU - Bruhwiler, David L.

AU - Han, Baoxi

AU - Stockli, Martin P.

PY - 2013

Y1 - 2013

N2 - A solenoid-based low-energy beam transport (LEBT) subsystem is under development for the H- linac front end of the Spallation Neutron Source. The LEBT design includes MHz-frequency chopping of a partially neutralized H- beam that can potentially lead to beam instabilities. We report results of numerical modeling using the parallel VSim [1] framework for 3D electrostatic particle-in-cell (PIC) to simulate H- beam dynamics in the LEBT, over multiple chopping events. We detail how the addition of a positively biased potential barrier near the entrance of the chopper can improve LEBT performance by eliminating chopper-induced emittance increases over many chopping events.

AB - A solenoid-based low-energy beam transport (LEBT) subsystem is under development for the H- linac front end of the Spallation Neutron Source. The LEBT design includes MHz-frequency chopping of a partially neutralized H- beam that can potentially lead to beam instabilities. We report results of numerical modeling using the parallel VSim [1] framework for 3D electrostatic particle-in-cell (PIC) to simulate H- beam dynamics in the LEBT, over multiple chopping events. We detail how the addition of a positively biased potential barrier near the entrance of the chopper can improve LEBT performance by eliminating chopper-induced emittance increases over many chopping events.

UR - http://www.scopus.com/inward/record.url?scp=84890618484&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84890618484

SN - 9783954501229

T3 - IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference

SP - 2000

EP - 2002

BT - IPAC 2013

T2 - 4th International Particle Accelerator Conference, IPAC 2013

Y2 - 12 May 2013 through 17 May 2013

ER -

Reducing emittance of a H^- beam in a solenoid-based low-energy beam transport through numerical modeling

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