Thermal effects on the STAR electromagnetic calorimeter

Technical Report · Tue Jul 19 04:00:00 EDT 1994

DOI:https://doi.org/10.2172/10107488· OSTI ID:10107488

Fornek, T; Guarino, V; Spinka, H; Underwood, D ^[1]

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1. Argonne National Lab., IL (United States). High Energy Physics Div.

The STAR detector for the RHIC colliding beam accelerator is under construction at Brookhaven National Laboratory. This detector will consist of a number of subsystems. These include a silicon vertex detector (SVT) for charged particle tracks near the interaction region, a time projection chamber (TPC) for charged particle tracking, an array of plastic scintillation counters (CTB) in a layer around the TPC for triggering on charged particles, a conventional solenoidal magnet, and some additional small triggering detectors along the beam-line. An electromagnetic calorimeter (EMC) is an upgrade to the ``baseline`` detector configuration above. The conventional magnet and numerous electronic channels for the SVT and TPC subsystems will generate a considerable amount of heat during the operation of STAR. However, it is possible that a chiller for the magnet cooling water will not be available during some of the early STAR runs. As a result, the average magnet temperature may vary considerably between winter and summer. This note summarizes calculations and measurements performed to evaluate the effects of an elevated magnet temperature on the performance of the electromagnetic calorimeter.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10107488
• Report Number(s): ANL-HEP-TR--94-42; ON: DE95004663; IN: STAR Note 177
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303
430400
440104
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BROOKHAVEN RHIC
EXPERIMENTAL FACILITIES AND EQUIPMENT
HEATING
HIGH ENERGY PHYSICS INSTRUMENTATION
OPTICAL FIBERS
PERFORMANCE
READOUT SYSTEMS
SHOWER COUNTERS
SI SEMICONDUCTOR DETECTORS
STORAGE RINGS
SUPPORTS
TEMPERATURE CONTROL
TEMPERATURE DEPENDENCE
THERMAL DEGRADATION
THERMAL STRESSES