Just putting out my attempt to create a minimal SVG image for the CERN logo:

Rendered version:
CERN logo

SVG (WordPress.com doesn't support uploading SVG as an image format):

<?xml version="1.0"?>
<svg
  xmlns="http://www.w3.org/2000/svg"
  version="1.1"
  width="100px"
  height="100px"
  viewBox="0 0 864 864"
  id="cern-logo"
  xml:lang="en"
>
  <desc>CERN logo</desc>
  <g id="main-layer">
    <clipPath id="limit-to-viewport">
      <!-- Used to avoid any contents in the white frame or outside the viewport -->
      <rect id="clip-viewport" x="0px" y="0px" width="864px" height="864px" />
    </clipPath>
    <clipPath id="limit-to-inner-square">
      <!-- Used to avoid any contents in the white frame or outside the viewport -->
      <rect
        id="clip-inner-square"
        x="45px"
        y="45px"
        width="767px"
        height="767px"
      />
    </clipPath>
    <rect
      id="inner-square"
      x="45px"
      y="45px"
      width="767px"
      height="767px"
      fill="#003152"
      stroke="none"
    />
    <g id="psb-layer">
      <circle
        id="psb-ring"
        cx="461px"
        cy="453px"
        r="258px"
        fill="none"
        stroke="white"
        stroke-width="30px"
      />
      <ellipse
        id="psb-ring-c-background"
        cx="104px"
        cy="375px"
        rx="309.6px"
        ry="73.71px"
        fill="#003152"
        stroke="none"
        clip-path="url(#limit-to-inner-square)"
      />
      <line
        id="psb-ejection-line"
        x1="461px"
        y1="195px"
        x2="153px"
        y2="195px"
        stroke="white"
        stroke-width="30px"
        transform="rotate(100.2 461 453)"
      />
    </g>
    <g id="sps-layer">
      <circle
        id="sps-ring"
        cx="354px"
        cy="375px"
        r="250px"
        fill="none"
        stroke="white"
        stroke-width="42px"
      />
      <circle
        id="sps-ring-inner-shadow"
        cx="354px"
        cy="375px"
        r="224px"
        fill="none"
        stroke="#003152"
        stroke-width="10px"
      />
      <circle
        id="sps-ring-outer-shadow"
        cx="354px"
        cy="375px"
        r="276px"
        fill="none"
        stroke="#003152"
        stroke-width="10px"
      />
      <line
        id="sps-na-line"
        x1="354px"
        y1="125px"
        x2="864px"
        y2="125px"
        stroke="white"
        stroke-width="42px"
        clip-path="url(#limit-to-viewport)"
      />
      <g id="sps-wa-line-layer" transform="rotate(133.7 354 375)">
        <line
          id="sps-wa-line"
          x1="354px"
          y1="125px"
          x2="864px"
          y2="125px"
          stroke="white"
          stroke-width="42px"
          clip-path="url(#limit-to-viewport)"
        />
        <line
          id="sps-wa-line-outer-shadow"
          x1="354px"
          y1="99px"
          x2="664px"
          y2="99px"
          stroke="#003152"
          stroke-width="10px"
        />
        <line
          id="sps-wa-line-inner-shadow"
          x1="554px"
          y1="151px"
          x2="664px"
          y2="151px"
          stroke="#003152"
          stroke-width="10px"
        />
      </g>
      <g id="sps-cngs-line-layer" transform="rotate(78.5 354 375)">
        <line
          id="sps-cngs-line"
          x1="354px"
          y1="125px"
          x2="858px"
          y2="125px"
          stroke="white"
          stroke-width="42px"
          clip-path="url(#limit-to-viewport)"
        />
        <line
          id="sps-cngs-line-outer-shadow"
          x1="354px"
          y1="99px"
          x2="824px"
          y2="99px"
          stroke="#003152"
          stroke-width="10px"
        />
        <line
          id="sps-cngs-line-inner-shadow"
          x1="554px"
          y1="151px"
          x2="824px"
          y2="151px"
          stroke="#003152"
          stroke-width="10px"
        />
      </g>
      <line
        id="sps-tt10-line"
        x1="354px"
        y1="125px"
        x2="124px"
        y2="125px"
        stroke="white"
        stroke-width="42px"
        transform="rotate(-104 354 375)"
      />
    </g>
    <g id="text-layer">
      <text
        x="120px"
        y="423px"
        font-family="Verdana"
        font-size="94pt"
        fill="white"
        text-anchor="start"
        transform="scale(1.2 1)"
      >
        C
      </text>
      <text
        x="204px"
        y="423px"
        font-family="Verdana"
        font-size="94pt"
        fill="white"
        text-anchor="start"
        transform="scale(1.2 1)"
      >
        E
      </text>
      <text
        x="280px"
        y="423px"
        font-family="Verdana"
        font-size="94pt"
        fill="white"
        text-anchor="start"
        transform="scale(1.2 1)"
      >
        R
      </text>
      <text
        x="363px"
        y="423px"
        font-family="Verdana"
        font-size="94pt"
        fill="white"
        text-anchor="start"
        transform="scale(1.2 1)"
      >
        N
      </text>
    </g>
    <rect
      id="outer-border"
      x="12.5px"
      y="12.5px"
      width="832px"
      height="832px"
      fill="none"
      stroke="#003152"
      stroke-width="39px"
    />
  </g>
</svg>