Radiation detector adapted to be irradiated by nuclear particles, which comprises: - an electrical connection means comprising a first portion, referred to as an anode, and a second portion, referred to as a cathode; - a metal housing, inside of which at least one portion of said electrical connection means is positioned; - a semi-conductor sensor, said sensor being encapsulated in the housing; and characterised in that the detector comprises a means for attaching the sensor to the housing, said attachment means comprising an electrically conductive material, at least one first portion of the attachment means being connected to the anode of the electrical connection means and being removably linked to said sensor, at least one second portion of the attachment means being connected to the cathode of the electrical connection means and being removably linked to said sensor and in that the first portion of the attachment means comprises a moveable component having a pre-stressed part so as to exert a mechanical pressure on the sensor so that the sensor is maintained in position and in that: - the second portion of the attachment means comprises a first metal support connected to the cathode, a first surface of the sensor being adapted to be in contact with a first surface of the first support, and - the moveable component of the first portion of the attachment means is between: - a first position, in which it exerts a mechanical pressure on a second surface of the sensor in such a way that the sensor is maintained in position between the first metal support and the moveable component; and - a second position, in which it does not exert mechanical pressure on the sensor; and in that the first surface of the first support comprises a first bundle of short metal spikes and in that the moveable component comprises a first portion, said first portion being adapted to be in contact with the second surface of the sensor in the first position of the moveable component, said first portion comprising a second bundle of short metal spikes. - an electrical connection means comprising a first portion, referred to as an anode, and a second portion, referred to as a cathode; - a metal housing, inside of which at least one portion of said electrical connection means is positioned; - a semi-conductor sensor, said sensor being encapsulated in the housing; and characterised in that the detector comprises a means for attaching the sensor to the housing, said attachment means comprising an electrically conductive material, at least one first portion of the attachment means being connected to the anode of the electrical connection means and being removably linked to said sensor, at least one second portion of the attachment means being connected to the cathode of the electrical connection means and being removably linked to said sensor and in that the first portion of the attachment means comprises a moveable component having a pre-stressed part so as to exert a mechanical pressure on the sensor so that the sensor is maintained in position and in that: - the second portion of the attachment means comprises a first metal support connected to the cathode, a first surface of the sensor being adapted to be in contact with a first surface of the first support, and - the moveable component of the first portion of the attachment means is between: - a first position, in which it exerts a mechanical pressure on a second surface of the sensor in such a way that the sensor is maintained in position between the first metal support and the moveable component; and - a second position, in which it does not exert mechanical pressure on the sensor; and in that the first surface of the first support comprises a first bundle of short metal spikes and in that the moveable component comprises a first portion, said first portion being adapted to be in contact with the second surface of the sensor in the first position of the moveable component, said first portion comprising a second bundle of short metal spikes. - a first position, in which it exerts a mechanical pressure on a second surface of the sensor in such a way that the sensor is maintained in position between the first metal support and the moveable component; and - a second position, in which it does not exert mechanical pressure on the sensor;