TITLE: stationary tower forcing
QUESTION [5 upvotes]: It is known that if $\delta$ is a Woodin cardinal and $\kappa < \delta$, then the stationary tower forcing $\mathbb Q^\kappa_{<\delta}$ preserves cardinals up to $\kappa$ and forces $\delta = \kappa^+$.  Thus if there is a Woodin cardinal $\delta$ then there is a forcing preserving cardinals up to $\aleph_\omega$ and making $\delta = \aleph_{\omega+1}$.  But it is also known that $\mathbb Q^\kappa_{<\delta}$ is not $\delta$-c.c.
Question: Is there some large cardinal assumption that implies the existence of a cardinal $\kappa > \aleph_{\omega+1}$ and a $\kappa$-c.c. forcing $\mathbb P$ which preserves $\aleph_n$ for finite $n$ and makes $\kappa = \aleph_{\omega+1}$?
I'm no expert on these things, but naively I would suggest two possible approaches: (a) Find a large cardinal $\delta$ that implies the existence of a $\delta$-saturated tower of ideals with similar effects as the stationary tower.  (b) Find an inaccessible cardinal $\delta$ with a precipitous tower of ideals of height $\delta$ that preserves the $\aleph_n$'s but actually collapses $\delta$, so that $\delta^+$ is the witness.  Update: (b) is ruled out by Mohammad's result here.
Note:  It is consistent relative to large cardinals that there is some $\kappa$-c.c. forcing collapsing a regular $\kappa$ to be $\aleph_{\omega+1}$ while preserving cardinals below $\aleph_\omega$.  Namely an $\aleph_{\omega+2}$-saturated ideal on $\aleph_{\omega+1}$, which can be forced from a huge cardinal.  But I want to see if it is outright implied by large cardinals, because then it is much easier to combine with other things.

New Idea: Foreman-Magidor-Shelah show in "Martin's Maximum Part I" that if $\mu$ is regular and $\kappa > \mu$ is supercompact, then $\mathrm{Col}(\mu,<\kappa)$ forces that $NS_\mu$ is precipitous.  I believe this was improved by Goldring to a Woodin cardinal.  So perhaps for large $\kappa$, $\mathrm{Col}(\aleph_{\omega+1},<\kappa) * \dot{\mathcal{P}(\aleph_{\omega+1}) / NS}$ does the trick.  If we force below $cof(\omega_n)$ for $n > 0$, then we are sure to collapse $\kappa = \aleph_{\omega+2}$ (by a theorem of Shelah), and the whole forcing is $\kappa$-dense, so $\kappa^+$ should be the witness.  But the problem is, what happens below $\aleph_\omega$?  Despite being precipitous, could forcing with $NS_{\aleph_{\omega+1}}$ actually make $\kappa$ countable?  The proof of precipitousness given in the paper is a bit abstract so I have no idea how the generic ultrapower compares to the generic extension.

REPLY [3 votes]: This may not be an answer but it is longer than be a comment:
Starting from a supercompact cardinal $\kappa$ an inaccessible $\lambda$ above it, we can construct a model $M$ of ZFC in which $\kappa=\aleph_\omega$ and $\lambda=\aleph_{\omega+1}.$ The model in an intermediate submodel of a supercompact Prikry forcing with suitable collapses.
I think using an analysis similar to Foreman-Woodin's paper "GCH can fail everywhere", we can show that this intermdiate submodel $M$ is a $\lambda-c.c.$ extension of the ground model. 
Now find another intermediate submodel $N \subset M$ of the ground model which is essentially the Prikry extension of the ground which makes $\kappa$ into $\aleph_\omega,$ preserves cardinals above $\kappa$ and it makes the cardinal structure below $\aleph_\omega$ the same as in $M$. 
Now consider $M$ as a generic extension of $N$, which makes $\lambda$ into $\aleph_{\omega+1}$ and is $\lambda-c.c.$ extension of $N$.