Vertical position feedback system for PBX-M

R. E. Hatcher; S. Jardin; P. Mathe; M. Okabayashi; D. Ward

Vertical position feedback system for PBX-M

R. E. Hatcher
, S. Jardin
, P. Mathe
, M. Okabayashi
, D. Ward

PPPL Theory

Research output: Contribution to conference › Paper › peer-review

1 Scopus citations

Abstract

The PBX-M (Princeton Beta Experiment-Modified) tokamak produces highly shaped discharges that can be vertically unstable. The PBX-M vertical position control-system hardware is described, results from plasma operation are shown, and results of analyses of the PBX-M device with respect to vertical displacements of the plasma are presented. A rigid displacement model indicates that terms proportional to plasma position and velocity are required in the control function to effectively damp oscillatory motion of the discharge. Simulations from the Princeton Tokamak Simulation Code (TSC) have confirmed the severity of these instabilities. Sawtooth analysis of soft X-ray data is used to independently assess the effectiveness of the system in operation.

Original language	English (US)
Pages	463-466
Number of pages	4
State	Published - 1989
Event	Proceedings - IEEE Thirteenth Symposium on Fusion Engineering Part 2 (of 2) - Knoxville, TN, USA Duration: Oct 2 1989 → Oct 6 1989

Conference

Conference	Proceedings - IEEE Thirteenth Symposium on Fusion Engineering Part 2 (of 2)
City	Knoxville, TN, USA
Period	10/2/89 → 10/6/89

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

Cite this

@conference{b52e0c7bbf9a4134b600abb0fa6886fe,

title = "Vertical position feedback system for PBX-M",

abstract = "The PBX-M (Princeton Beta Experiment-Modified) tokamak produces highly shaped discharges that can be vertically unstable. The PBX-M vertical position control-system hardware is described, results from plasma operation are shown, and results of analyses of the PBX-M device with respect to vertical displacements of the plasma are presented. A rigid displacement model indicates that terms proportional to plasma position and velocity are required in the control function to effectively damp oscillatory motion of the discharge. Simulations from the Princeton Tokamak Simulation Code (TSC) have confirmed the severity of these instabilities. Sawtooth analysis of soft X-ray data is used to independently assess the effectiveness of the system in operation.",

author = "Hatcher, \{R. E.\} and S. Jardin and P. Mathe and M. Okabayashi and D. Ward",

year = "1989",

language = "English (US)",

pages = "463--466",

note = "Proceedings - IEEE Thirteenth Symposium on Fusion Engineering Part 2 (of 2) ; Conference date: 02-10-1989 Through 06-10-1989",

}

TY - CONF

T1 - Vertical position feedback system for PBX-M

AU - Hatcher, R. E.

AU - Jardin, S.

AU - Mathe, P.

AU - Okabayashi, M.

AU - Ward, D.

PY - 1989

Y1 - 1989

N2 - The PBX-M (Princeton Beta Experiment-Modified) tokamak produces highly shaped discharges that can be vertically unstable. The PBX-M vertical position control-system hardware is described, results from plasma operation are shown, and results of analyses of the PBX-M device with respect to vertical displacements of the plasma are presented. A rigid displacement model indicates that terms proportional to plasma position and velocity are required in the control function to effectively damp oscillatory motion of the discharge. Simulations from the Princeton Tokamak Simulation Code (TSC) have confirmed the severity of these instabilities. Sawtooth analysis of soft X-ray data is used to independently assess the effectiveness of the system in operation.

AB - The PBX-M (Princeton Beta Experiment-Modified) tokamak produces highly shaped discharges that can be vertically unstable. The PBX-M vertical position control-system hardware is described, results from plasma operation are shown, and results of analyses of the PBX-M device with respect to vertical displacements of the plasma are presented. A rigid displacement model indicates that terms proportional to plasma position and velocity are required in the control function to effectively damp oscillatory motion of the discharge. Simulations from the Princeton Tokamak Simulation Code (TSC) have confirmed the severity of these instabilities. Sawtooth analysis of soft X-ray data is used to independently assess the effectiveness of the system in operation.

UR - https://www.scopus.com/pages/publications/0024896778

UR - https://www.scopus.com/pages/publications/0024896778#tab=citedBy

M3 - Paper

AN - SCOPUS:0024896778

SP - 463

EP - 466

T2 - Proceedings - IEEE Thirteenth Symposium on Fusion Engineering Part 2 (of 2)

Y2 - 2 October 1989 through 6 October 1989

ER -

Vertical position feedback system for PBX-M

Abstract

Conference

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this