Cables

Overview

The NPS calorimeter will be enclosed in a light-tight and temperature controlled box:

Voltage divider

• Voltage divider schematics
• The 5-pin connector on the voltage divider is Samtec Part # IPL1-105-01-L-S-RA-K (male):

• Pictures of the assembly:

Custom cable from voltage divider to PCB boards

This cable carries the HV to the PMT divder and reads the anode signal. The cable has a female SAMTEC 5-pin connector IPD1-05-S-K on one side, with 4 crimp contacts CC79L-2630-01-L. On the other side the cable has a SMA RS PRO 546-3210 connector [Datasheet, Crimp instructions] (signal) and a Fischer connector S 102 A 018 (HV). Both the HV and the anode cables are coaxial RG174/U (datasheet). The cable length is 375 mm.

• Cable schematics
• Picture of the cable:

PCB boards (one per detector column)

The HV and the anode signals of each column of the detector is routed through a PCB board. This boards also holds one LED per channel.

• Each HV cable is plugged into a Fischer D 102 A018 connector on the PCB board
• The anode cable is plugged into a SMA CINCH CONNECTIVITY 142-0701-501
• The anode signal gets out at the opposite side of the board through an identical connector SMA CINCH CONNECTIVITY 142-0701-501
• The HV enters through two 15-pin SAMTEC IPBT-115-H1-T-D-K and one 8-pin SAMTEC IPBT-108-H1-T-D-K connectors at the top of the board
• The LED sitting in front of each PMT are controlled by a ribbon cable plugged at the bottom of the board to male 2x36-pin SAMTEC connector TST-136-01-L-D
• Board schematics: Layout.pdf, Connections.pdf, Parts.xlsx

HV cables

The PCBs are connected to a HV panel at the top of the NPS box through 20-AWG cables. Three cables per detector column: 2 cables have SAMTEC PMSD-15-206-K-15.40-D-LUS connectors and 1 cable has PMSD-08-206-K-15.40-D-LUS connectors

• Cable schematics

Notice that 20 AWG = 7.2 A, and our currents are of the order of micro-Amps.

LED control cables

Ribbon cables with SAMTEC connectors HCSD-36-01-N on each side:

• Cable schematics

Anode signal cables

• Signal come out at the back of the PCB boards.
• There are KX3 cables with a SMA connector RS PRO 546-3210 on one side and a panel-mount LEMO PES.00.250.NTME31 on the other side
• The length of each cable depends on the row of the detector (longer cables for channels at the bottom).
• The LEMO connectors are mounted at the top of the NPS box (see LEMO panel below)
• Cable schematics

Patch panels at the top of the NPS box

There are 3 panels on the top of the NPS box:

Signal panel (LEMO)

This is not patch panel per se, but a simple panel with holes where the LEMOSof the anode cables are mounted on.

HV panel

The board is made of two 15-pin SAMTEC IPBT-115-H1-T-D-K and one 8-pin SAMTEC IPBT-108-H1-T-D-K for each detector column (associated with one PCB board)

• Board schematics Layout.pdf, Connections.pdf, Parts.xlsx
• In order to provide HV to the NPS detector, one should plug into this panel ribbon cables with SAMTEC PMSD-15-206-K-15.40-D-LUS and PMSD-08-206-K-15.40-D-LUS connectors. Details are provided here

LED panel

Made of 2x36-pin SAMTEC connectors TST-136-01-L-D (one per detector column, i.e. a total of 30)

• Board schematics: Layout, Connections.pdf, Parts.xlsx

Tests performed on boards and cables

• In French (to be translated soon)