HV hedgehog page

Hv hedgehog production database:

- Access format, updated as of March 03, 2006

- Excel format, updated as of March 03, 2006

- HV hedgehog shipments to production sites (updated to August 2005)

Hv cables connecting hedgehogs to SHV connectors on Faraday cage - Assembly specifications

HV hedgehog specifications, final version:

• Component specifications v 2.0 (pdf)
• PCB specifications v 2.0 (pdf)
• Assembly specifications v 2.1 (pdf)

HV Hedgehog types (pdf)

Schematics: 3x8 Barrel (pdf) and 4x6 Barrel (pdf)

Layout (final version for production - updated August 8, 2001):

• 3x8 type I (gerber, pdf) - 3x8 type I right end (gerber and pdf) - 3x8 type I left end (gerber and pdf);
• 3x8 type II (mirrored w.r.t. 3x8 I) - 3x8 type II right end (mirrored w.r.t. 3x8 I right end) - 3x8 type II left end (mirrored w.r.t. 3x8 I left end);
• 3x6 type I right end, special for BOG/BOH chambers (gerber, pdf) - 3x6 type I left end, special for BOG/BOH chambers (gerber, pdf);
• 3x6 type II right end, special for BOG/BOH chambers (mirrored w.r.t. 3x6 I right end) - 3x6 type II left end, special for BOG/BOH chambers (mirrored w.r.t. 3x6 I left end);
• 3x4 type I, special for BOG/BOH chambers (gerber, pdf);
• 3x4 type II, special for BOG/BOH chambers (mirrored w.r.t. 3x4 I);
• 4x6 type III (gerber, pdf) - 4x6 type III right end (gerber and pdf) - 4x6 type III left end (gerber and pdf);
• 4x6 type IV (mirrored w.r.t. 4x6 III) - 4x6 type IV right end (mirrored w.r.t. 4x6 III right end) - 4x6 type IV left end (mirrored w.r.t. 4x6 III left end).
• ENDCAP layouts: www.hepl.harvard.edu/~mdt_elx/endcap_hv_hdghgs/

HV Hedgehog prototype production: specifications (pdf)   March 2001

Module 0 HV hedgehogs: procurement page

Module 0 HV hedgehogs: costs (xls)

Hv jumpers connecting endcap hgs and patch panels (not used in final production):

 - version v.1 - old (pdf), version v.3 - old (pdf), version v.4 (pdf)     updated Jan 12 2001

Test are currently performed on three capacitor types: Murata DECB33J471KC4B (470 pF 6.3kV), Murata DHR15B471M10K (470 pf 10kV) and Tusonix 0818 025 Z5U0 501M (500 pF 5kV).

Capacitance variation against temperature (19 ºC, 40 ºC and 70 ºC)  and bias (4kV):

• data (xls)
• plots (pdf)
• circuit for C vs V measurement (pdf)

20 cards were termally cycled in an oven between 20 ºC and  70 ºC.

 

Front view of the cards in the oven and of the measurement instrumentation

• data (xls)

Last update 07 March 2006

Maintained by A.L.tml>