Suggested backlight sources for scanning film with DSLR

There’s quite an exhaustive thread on the practice of colour profiling, perhaps you’ve seen it. Many different opnions expressed there.

I was wondering, given that the heat is a price worth paying for you, what shutter speed are you able to use?

I use a Cinestill CS-Lite and for 35mm slides I’m using around 1/160 at f5.6 at 200 iso. It doesn’t get hot at all, the Ipad wall adapter does get a little warm. I’m in no way suggesting that this compares with the quality of your light source, just wondering why yours needs to be quite so bright (and hot).