Include ZDC in L1T re-emulation workflows

[missirol]

Weeks ago, the L1-uGT emulator (#42634) and unpacker (#42733) were updated to make use of data from the Zero-Degree Calorimeter, for the 2023 HIon run (and beyond). These updates were the necessary ones to be able to correctly take data online with a L1T menu including algorithms using ZDC data.

Other updates needed to properly test/re-emulate such L1T menus offline are still missing. For what I understand, this includes (at least) the following.

• A "packer" ("digi to raw") of the ZDC digis, as part of L1TDigiToRaw.
• The necessary updates to include this in all the relevant sequences/workflows to re-emulate the L1T results, e.g. SimL1EmulatorRepack_Full_cff.

As long as these updates are missing, any re-emulation of the L1T results in standard workflows will return incorrect results for any L1T algorithms using ZDC (again, for what I understand).

FYI: @cms-sw/hlt-l2

[cmsbuild]

A new Issue was created by @missirol Marino Missiroli.

@Dr15Jones, @sextonkennedy, @smuzaffar, @rappoccio, @antoniovilela, @makortel can you please review it and eventually sign/assign? Thanks.

cms-bot commands are listed here

[mmusich]

assign l1

[cmsbuild]

New categories assigned: l1

@epalencia,@aloeliger you have been requested to review this Pull request/Issue and eventually sign? Thanks

[aloeliger]

@missirol @mmusich, I spoke with the ZDC developers a few weeks ago about providing a packer for their workflows. No update since then.

[mmusich]

, I spoke with the ZDC developers a few weeks ago about providing a packer for their workflows. No update since then.

Might be useful to tag them here as well if you know the gutHub accounts.
I don't know what are the general CMS plans for HI MC production, but looks like the ZDC L1T packer would be a necessary ingredient for the HLT simulation.

[aloeliger]

@matt2275 Just tagging you on this. @cfmcginn We didn't talk about this, but you developed the original ZDC emulator, so perhaps you should be in the loop.

[matt2275]

I have a first draft of a ZDC packer here (https://github.com/matt2275/cmssw/tree/ZDCUnpacker/EventFilter/L1TRawToDigi). I have not done any testing since I'm not sure how to do that. One way of testing this would be to produce two sets of digis one that was only unpacked once and the other that was unpacked, repacked and unpacked again. If the sets are identical, it's a good sign the packer is working properly. Unfortunately, I'm not sure how to go about doing that.

[missirol]

@cms-sw/l1-l2

What's the status of this issue ?

[mmusich]

What's the status of this issue?
@cms-sw/l1-l2 @matt2275

[mmusich]

IIUC

A "packer" ("digi to raw") of the ZDC digis, as part of L1TDigiToRaw.

was done at #44019

What about the item

The necessary updates to include this in all the relevant sequences/workflows to re-emulate the L1T results, e.g. SimL1EmulatorRepack_Full_cff.

[hjbossi]

Hi @mmusich, the L1TZDC emulation is included here: #42818 - is this what you mean or something else? Of course, this is also dependent on the outstanding issue related to the geometry (see #43582) but this is being fixed by @bsunanda .