TY - JOUR
T1 - The Mark III vertex chamber
AU - Adler, J.
AU - Bolton, T.
AU - Bunnell, K.
AU - Cassell, R.
AU - Cheu, E.
AU - Eisele, R.
AU - Freese, T.
AU - Grab, C.
AU - Mazaheri, G.
AU - Mir, R.
AU - Odian, A.
AU - Pitman, D.
AU - Stockhausen, W.
AU - Toki, W.
AU - Villa, F.
AU - Wadley, W.
AU - Wasserbaech, S.
AU - Wisniewski, W.
N1 - Funding Information:
The Mark III experiment, operating at the SLAC e +e-storage ring SPEAR, has been recently outfitted with a twelve-layer pressurized straw-type vertex cham- * This work was supported in part by the Department of Energy, under contracts DE-AC03-76SF00515, DE-AC02-76ER01195, DE-AC03-81ER40050, DE-AM03-76SF0034, and by the National Science Foundation .
PY - 1989/3/15
Y1 - 1989/3/15
N2 - We have constructed and installed a pressurized straw vertex chamber in the Mark III experiment at the SLAC e+e- storage ring SPEAR. The chamber consists of 12 concentric layers of straws, arrayed at radii between 5.4 cm and 13.0 cm from the interaction point. There are a total of 640 straws, each 8 mm in diameter and 84 cm long. We obtain an overall spatial resolution of 49 μm for argon-ethane ( 50% 50%) at 3 atm absolute using a cosmic ray data sample. The effects of gases on various chamber materials have been investigated. Chamber lifetime studies have been performed. A prototype chamber was used to study the resolution obtained with various gases.
AB - We have constructed and installed a pressurized straw vertex chamber in the Mark III experiment at the SLAC e+e- storage ring SPEAR. The chamber consists of 12 concentric layers of straws, arrayed at radii between 5.4 cm and 13.0 cm from the interaction point. There are a total of 640 straws, each 8 mm in diameter and 84 cm long. We obtain an overall spatial resolution of 49 μm for argon-ethane ( 50% 50%) at 3 atm absolute using a cosmic ray data sample. The effects of gases on various chamber materials have been investigated. Chamber lifetime studies have been performed. A prototype chamber was used to study the resolution obtained with various gases.
UR - http://www.scopus.com/inward/record.url?scp=0024621621&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024621621&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(89)90614-1
DO - 10.1016/0168-9002(89)90614-1
M3 - Article
AN - SCOPUS:0024621621
VL - 276
SP - 42
EP - 52
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-2
ER -