Difference between revisions of "Sensor connections"

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== Impedance on cables ==
 
== Impedance on cables ==
Every cable has a certain impedance, and this impedance  is the ratio between the voltage and current of a single wave propagating along the line. When the impedance of cables and electronics is mismatched these waves can reflect creating more waves. This results in noise, is is therefore very important to make sure all cables connected have the same impedance. The cable in the vacuum close to the SiPM sets the baseline, which in our case is 50 [Θ]
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Every cable has a certain impedance, and this impedance  is the ratio between the voltage and current of a single wave propagating along the line. When the impedance of cables and electronics is mismatched these waves can reflect creating more waves. This results in noise, is is therefore very important to make sure all cables connected have the same impedance. The cable in the vacuum close to the SiPM sets the baseline, which in our case is 50[Ω].

Revision as of 07:55, 23 February 2022

Feedthroughs

This page contains the information about the connections made with the sensors trough the electrical feedthroughs. There are three feedthroughs as seen on the image below, the different feedthroughs will be numbered. We will also, when possible try to keep every feedthrough dedicated to one sort of sensor. The pins will be number 1 to 9 from top-left to bottom right as showed in the schematic below.

caption caption
  • Feedthrough 1: Not dedicated
  • Feedthrough 2: Temperature sensors
  • Feedthrough 3: SiPM's

Temperature sensor

Temperature sensor 1

The first temperature sensor will be connected using a D-sub feedthrough number 2. And will be connected using pin 1 (blue) and pin 6 (red). To be able to read-out the sensor a voltage of 3.3V is applied over the sensor and a 1K resistor. The voltage over the sensor is measured and conversed into a resistance, which will be used for determining the temperature.

Cable outside

caption

caption
Cable inside

caption

Temperature sensor 2

tekst


Temperature sensor 3

tekst

Silicon Photomultipliers

SiPM 1

The first SiPM will be connected using a D-sub feedthrough number 3. And will be connected using pin 1 (grey) and pin 6 (white).

Cable outside

caption

caption
Cable inside

caption

Impedance on cables

Every cable has a certain impedance, and this impedance is the ratio between the voltage and current of a single wave propagating along the line. When the impedance of cables and electronics is mismatched these waves can reflect creating more waves. This results in noise, is is therefore very important to make sure all cables connected have the same impedance. The cable in the vacuum close to the SiPM sets the baseline, which in our case is 50[Ω].