The EVA trigger: Transverse momentum selection in a solenoid

J. Wu; E. D. Minor; J. E. Passaneau; S. F. Heppelmann; Chu Ng; G. Bunce; I. Mardor

doi:10.1016/0168-9002(94)90619-X

The EVA trigger: Transverse momentum selection in a solenoid

J. Wu, E. D. Minor, J. E. Passaneau, S. F. Heppelmann, Chu Ng, G. Bunce, I. Mardor

Physics

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A custom CMOS LSI and ECL PAL-based trigger system for a particle physics experiment is presented. The EVA apparatus at Brookhaven National Laboratory is designed to observe large angle scattering near the kinematic limit of P_T for hadron-proton scattering with cross sections in the picobarn range and interaction rates of 100 MHz. The trigger selects events with high P_T tracks in a solenoidal straw tube tracking magnetic spectrometer in three stages. An ECL PAL scintillation hodoscope pretrigger and timing mask is followed by P_T reconstruction from three superlayers of straw tube drift chambers using custom CMOS LSI integrated circuits. The higher level CMOS trigger system is implemented on custom modules and functions at secondary trigger rates in excess of 1 MHz. A Motorola MC68000 microprocessor resides on each module and uses global information on the event to provide a third trigger level. The modules are interfaced to VMEbus, controlled by a single board VME computer.

Original language	English (US)
Pages (from-to)	183-196
Number of pages	14
Journal	Nuclear Inst. and Methods in Physics Research, A
Volume	349
Issue number	1
DOIs	https://doi.org/10.1016/0168-9002(94)90619-X
State	Published - Sep 15 1994

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/0168-9002(94)90619-X

Cite this

@article{62f2d11cdd7942ad8e821d2a00729f1e,

title = "The EVA trigger: Transverse momentum selection in a solenoid",

abstract = "A custom CMOS LSI and ECL PAL-based trigger system for a particle physics experiment is presented. The EVA apparatus at Brookhaven National Laboratory is designed to observe large angle scattering near the kinematic limit of PT for hadron-proton scattering with cross sections in the picobarn range and interaction rates of 100 MHz. The trigger selects events with high PT tracks in a solenoidal straw tube tracking magnetic spectrometer in three stages. An ECL PAL scintillation hodoscope pretrigger and timing mask is followed by PT reconstruction from three superlayers of straw tube drift chambers using custom CMOS LSI integrated circuits. The higher level CMOS trigger system is implemented on custom modules and functions at secondary trigger rates in excess of 1 MHz. A Motorola MC68000 microprocessor resides on each module and uses global information on the event to provide a third trigger level. The modules are interfaced to VMEbus, controlled by a single board VME computer.",

author = "J. Wu and Minor, {E. D.} and Passaneau, {J. E.} and Heppelmann, {S. F.} and Chu Ng and G. Bunce and I. Mardor",

note = "Funding Information: This work is performed under the auspices of the National Science Foundation and the U.S . Department of Funding Information: Energy, and the Basic Research Foundation administered",

year = "1994",

month = sep,

day = "15",

doi = "10.1016/0168-9002(94)90619-X",

language = "English (US)",

volume = "349",

pages = "183--196",

journal = "Nuclear Inst. and Methods in Physics Research, A",

issn = "0168-9002",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - The EVA trigger

T2 - Transverse momentum selection in a solenoid

AU - Wu, J.

AU - Minor, E. D.

AU - Passaneau, J. E.

AU - Heppelmann, S. F.

AU - Ng, Chu

AU - Bunce, G.

AU - Mardor, I.

N1 - Funding Information: This work is performed under the auspices of the National Science Foundation and the U.S . Department of Funding Information: Energy, and the Basic Research Foundation administered

PY - 1994/9/15

Y1 - 1994/9/15

N2 - A custom CMOS LSI and ECL PAL-based trigger system for a particle physics experiment is presented. The EVA apparatus at Brookhaven National Laboratory is designed to observe large angle scattering near the kinematic limit of PT for hadron-proton scattering with cross sections in the picobarn range and interaction rates of 100 MHz. The trigger selects events with high PT tracks in a solenoidal straw tube tracking magnetic spectrometer in three stages. An ECL PAL scintillation hodoscope pretrigger and timing mask is followed by PT reconstruction from three superlayers of straw tube drift chambers using custom CMOS LSI integrated circuits. The higher level CMOS trigger system is implemented on custom modules and functions at secondary trigger rates in excess of 1 MHz. A Motorola MC68000 microprocessor resides on each module and uses global information on the event to provide a third trigger level. The modules are interfaced to VMEbus, controlled by a single board VME computer.

AB - A custom CMOS LSI and ECL PAL-based trigger system for a particle physics experiment is presented. The EVA apparatus at Brookhaven National Laboratory is designed to observe large angle scattering near the kinematic limit of PT for hadron-proton scattering with cross sections in the picobarn range and interaction rates of 100 MHz. The trigger selects events with high PT tracks in a solenoidal straw tube tracking magnetic spectrometer in three stages. An ECL PAL scintillation hodoscope pretrigger and timing mask is followed by PT reconstruction from three superlayers of straw tube drift chambers using custom CMOS LSI integrated circuits. The higher level CMOS trigger system is implemented on custom modules and functions at secondary trigger rates in excess of 1 MHz. A Motorola MC68000 microprocessor resides on each module and uses global information on the event to provide a third trigger level. The modules are interfaced to VMEbus, controlled by a single board VME computer.

UR - http://www.scopus.com/inward/record.url?scp=0028495968&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028495968&partnerID=8YFLogxK

U2 - 10.1016/0168-9002(94)90619-X

DO - 10.1016/0168-9002(94)90619-X

M3 - Article

AN - SCOPUS:0028495968

SN - 0168-9002

VL - 349

SP - 183

EP - 196

JO - Nuclear Inst. and Methods in Physics Research, A

JF - Nuclear Inst. and Methods in Physics Research, A

IS - 1

ER -

The EVA trigger: Transverse momentum selection in a solenoid

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this