1. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 1 Fuse Boxes Chiho Wang Duke University

2. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 2 Fuse Box Components  FR-4 casing  FR-4 printed circuit film u 1812 size 1nF filter capacitors (same as module capacitor) u 1206 size 1-2k filter resistors u Custom made fuses  Truncated Molex 2759 female terminal  Habia HFI 150 minicoax HV cable  GC 10-5002 Corona dope coating  Furon K102, 0.001” Kapton + 0.0015” Acrylic adhesive tape  2-56 Nylon screw

3. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 3 Prototype  Fuses replaced by 2010 size 1M  resistors for HV testing

4. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 4 Molex 2749 terminal CUT

5. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 5 Type 1 Fuse Box Prototype

6. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 6 Fuses

7. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 7 Fuse & fuse box dimension  Fuse length: 5.8mm u prototype assumes 5.08mm u Additional space available in each module type: type 1: 3.2 mm type 2: 6.9 mm type 3: 7.9 mm

8. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 8 Fuse & fuse box dimension  Fuse height: 3.8 + leg space ~ 4mm u Prototype allows 3mm. u Increase ~  x 2 ~ 2-3mm for 2 layers of fuses

9. Chiho Wang ATLAS TRT Istanbul Workshop Duke University May, 2001 9 Summary  Fuse box prototypes have been in use for ~ 1 year in various module production QA processes. u Each module requires at least a dozen times of fuse box connection before completion.  Present design works and sees no obvious problem.  Available fuse dimension requires minor change in fuse box dimensions but is within acceptable range.  When fuse is available will proceed with fuse box prototype.