question on jupiters radiation

I was goofing around JPL's website on the voyeger probes when I read this:

Both Voyagers were specifically designed and protected to withstand the large radiation dosage during the Jupiter swing-by. This was accomplished by selecting radiation-hardened parts and by shielding very sensitive parts. An unprotected human passenger riding aboard Voyager 1 during its Jupiter encounter would have received a radiation dose equal to one thousand times the lethal level.

Why is the radiation levels so high at jupiter?

The strong magnetic field captures charged particles from the sun and
concentrates them -- similar to the radiation belts that surround the
Earth, but larger and more intense.

Iceman-Jamie wrote:

I was goofing around JPL's website on the voyeger probes when I read
this:

Both Voyagers were specifically designed and protected to withstand the
large radiation dosage during the Jupiter swing-by. This was
accomplished by selecting radiation-hardened parts and by shielding
very sensitive parts. An unprotected human passenger riding aboard
Voyager 1 during its Jupiter encounter would have received a radiation
dose equal to one thousand times the lethal level.

Why is the radiation levels so high at jupiter?

That will work for me, thank you