PHENIX central arm tracking detectors

The PHENIX tracking system consists of Drift Chambers (DC), Pad Chambers (PC) and the Time Expansion Chamber (TEC). PC1/DC and PC2/TEC/PC3 form the inner and outer tracking units, respectively. These units link the track segments that transverse the RICH and extend to the EMCal. The DC measures charged particle trajectories in the r – φ direction to determine p T of the particles and the invariant mass of particle pairs. The PCs perform 3D spatial point measurements for pattern recognition and longitudinal momentum reconstruction and provide spatial resolution of a few mm in both r – φ and z . The TEC tracks particles passing through the region between the RICH and the EMCal. The design and operational parameters of the detectors are presented and running experience during the first year of data taking with PHENIX is discussed. The observed spatial and momentum resolution is given which imposes a limitation on the identification and characterization of charged particles in various momentum ranges.

01.52.+r
29.30.Aj
29.30.Ep
29.40.Gx
RHIC
PHENIX
Charged particle detectors
Tracking
Electronics
drift chamber: gas

References(16)

Figures(0)

[1]

PHENIX detector overview, Nucl. Instr. and Meth. A , this issue

K. Adcox

[2]

PROTOTYPE TESTS OF TWO CONTROLLED GEOMETRY DRIFT CHAMBERS

et al.

- Nucl.Instrum.Meth.A 236 (1985) 264
•
DOI:
- 10.1016/0168-9002(85)90159-7

[3]

DRIFT CHAMBERS WITH CONTROLLED CHARGE COLLECTION GEOMETRY FOR THE NA34 / HELIOS EXPERIMENT

et al.

- Nucl.Instrum.Meth.A 252 (1986) 272-280,
- Nucl. Instrum. Methods A252 ( 1986) 272-280
•
DOI:
- 10.1016/0168-9002(86)91192-7

[4]

GARFIELD, recent developments

R. Veenhof
(
- NIKHEF, Amsterdam
)

- Nucl.Instrum.Meth.A 419 (1998) 726-730
•
DOI:
- 10.1016/S0168-9002(98)00851-1

[5]

F.M. Newcomer

- IEEE Trans.Nucl.Sci. NS-40 (1993) 630

[6]

Y. Arai

- IEEE Trans.Nucl.Sci. NS-45 (1998) 735

[7]

PHENIX on-line system, Nucl. Instr. and Meth. A , this issue

S.S. Adler

[8]

M.C. Smith

- IEEE Trans.Nucl.Sci. NS-46 (1999) 1998

[9]

PHENIX central arm particle I. D. detectors, Nucl. Instr. and Meth. A , this issue

M. Aizawa

[10]

PHENIX calorimeter, Nucl. Instr. and Meth. A , this issue

L. Aphecetche

[11]

W.L. Bryan

- IEEE Trans.Nucl.Sci. NS-45 (1998) 754

[12]

The PHENIX time expansion chamber

et al.

- Nucl.Phys.A 661 (1999) 669-672
•
DOI:
- 10.1016/S0375-9474(99)85114-8

[13]

E. O'Brien

- Nucl.Phys.A 566 (1994) 615c

[14]

A. Kandasamy

- IEEE Trans.Nucl.Sci. NS-46 (1999) 150

[15]

Proceedings of International Conference on Computing in High Energy Physics, Chicago, IL

A. Lebedev

[16]

Particle identification in TEC-TRD prototypes for the PHENIX detector at RHIC

B. Libby
(
- Iowa State U.
)
,
J.C. Hill
(
- Iowa State U.
)
,
A. Chikanian
(
- Yale U., Math. Dept.
)
,
S. Coe
(
- Yale U., Math. Dept.
)
,
J. Dunlop
(
- Yale U., Math. Dept.
)

et al.

- Nucl.Instrum.Meth.A 367 (1995) 244-247
•
DOI:
- 10.1016/0168-9002(95)00646-X