dorsal/arxiv
View SchemaThe BABAR Muon System Upgrade
| Authors | Wolfgang Menges |
|---|---|
| Categories | |
| ArXiv ID | physics/0609039 |
| URL | https://arxiv.org/abs/physics/0609039 |
| Journal | IEEENucl.Sci.Symp.Conf.Rec.5:1470-1474,2006 |
Abstract
Resistive Plate Chambers (RPCs) were used for the instrumentation of the iron flux return of the BABAR detector as a muon system. Unfortunately the efficiency of the original RPCs degraded rapidly with time. Limited Streamer Tubes (LSTs) were chosen for an upgrade of the barrel portion of the detector. The phased installation started in summer 2004 with replacing two sextants of the BABAR barrel muon system with LSTs. The modules for the remaining four sextants are under long-term test at SLAC and ready for installation, expected in 2006. The modules become inaccessible once installed in BABAR, so it is critical to select only perfectly working tubes. To accomplish this a strong QC system was established during the prototype phase, and fully implemented throughout pre-production and construction. To spot any damage during transport, the final modules are subjected to comprehensive tests at SLAC immediately after arrival and kept under long-term test till installation into BABAR. Details of these tests and results from long-term testing will be discussed. Since spring 2005 the PEP-II accelerator is running and BABAR is collecting data. First experience from data taking with the LSTs will be presented and the performance of the detector discussed.
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"abstract": "Resistive Plate Chambers (RPCs) were used for the instrumentation of the iron\nflux return of the BABAR detector as a muon system. Unfortunately the\nefficiency of the original RPCs degraded rapidly with time. Limited Streamer\nTubes (LSTs) were chosen for an upgrade of the barrel portion of the detector.\n The phased installation started in summer 2004 with replacing two sextants of\nthe BABAR barrel muon system with LSTs. The modules for the remaining four\nsextants are under long-term test at SLAC and ready for installation, expected\nin 2006. The modules become inaccessible once installed in BABAR, so it is\ncritical to select only perfectly working tubes. To accomplish this a strong QC\nsystem was established during the prototype phase, and fully implemented\nthroughout pre-production and construction. To spot any damage during\ntransport, the final modules are subjected to comprehensive tests at SLAC\nimmediately after arrival and kept under long-term test till installation into\nBABAR. Details of these tests and results from long-term testing will be\ndiscussed. Since spring 2005 the PEP-II accelerator is running and BABAR is\ncollecting data. First experience from data taking with the LSTs will be\npresented and the performance of the detector discussed.",
"arxiv_id": "physics/0609039",
"authors": [
"Wolfgang Menges"
],
"categories": [
"physics.ins-det"
],
"journal_ref": "IEEENucl.Sci.Symp.Conf.Rec.5:1470-1474,2006",
"title": "The BABAR Muon System Upgrade",
"url": "https://arxiv.org/abs/physics/0609039"
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