https://www.mr-tip.com/serv1.php?type=fo_se&fosearch=ramp do...
When a mobile MRI Scanner is in motion going from site to site a "ramp down" is performed before moving.This is when the magnetic field is lowered but not completely shut off. The field still keeps it's integrity due to the Cryogens that surround it. When it comes to the new site, a "ramp up" is performed to bring the magnetic strength back up to par. Bottom line...The Cryogens are not boiled off and keep the magnet cold when it is motion. If the magnet were to suddenly lose it's power, it could be due to a cryogen boil off.

--------------------------------------------------
Note added at 9 mins (2022-11-30 13:33:08 GMT)
--------------------------------------------------


Magnetoterapie - Clinica Steaua Divina
https://clinicasteauadivina.ro › magne...
·
Translate this page
****Reducerea considerabila a campului magnetic*** al Pamantului a influentat vizibil ... Campul magnetic pulsatil creat cu ajutorul magnetilor imbunatateste ...

--------------------------------------------------
Note added at 10 mins (2022-11-30 13:34:36 GMT)
--------------------------------------------------


Definition and synonyms of ramp down in the English dictionary
https://educalingo.com › dic-en › ramp-down
The definition of ramp down in the dictionary is to decrease or cause to decrease. Other definition of ramp down is to decrease the effort involved in a process ...