^aUniversity of California, Riverside, Riverside, California, 92521, USA

^bLos Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA

¹Corresponding author

PHENIX-MVD-97-4
Accepted for publication in Nuclear Instruments and Methods, Section A, May, 1997

Rohacell[1], a low density rigid foam, has been investigated as a support structure material for silicon strip detectors in the Multiplicity Vertex Detector (MVD) in the PHENIX experiment. Although Rohacell is susceptible to changes in humidity, tests have shown that it is an acceptable material for the MVD silicon support structure. The advantage of using Rohacell is that it offers a mechanically robust structure in which secondary interactions are minimized.

Next:1 Multiplicity Vertex Detector

Table of Contents

• Title Page
• 1 Multiplicity Vertex Detector
• 2 Rohacell Support Structure
• 3 Parylene Coating for Rohacell
• 4 Environmental Tests
  • 4.1 C-cages without Silicon
  • 4.2 Six-silicon C-cages with and without Silicon
  • 4.3 Differences between four and six-silicon Parylened cages
• 5 Conclusions
• References and Figures