Add CALOROC1B data model

[mhkim-anl]

Briefly, what does this PR introduce?

This PR introduces a data model for the CALOROC1B chip. Although it is not yet available in hardware, it is, together with the HGCROC chip, a strong candidate for the calorimeter readout in the ePIC experiment. Having a dedicated CALOROC1B data model allows us to study its expected performance in detail. The performance not only can be directly compared with the HGCROC-based performance, but also provide useful input for the CALOROC1B chip development.

Since the main difference between the CALOROC1B and HGCROC (CALOROC1A) chip is whether the chip has TOT or low gain ADC, the data model has been implemented based on edm4eic::HGCROCSample and edm4eic::RawHGCROCHit.

What kind of change does this PR introduce?

• Bug fix (issue #__)
• New feature (issue Add CALOROC type B data structure #133)
• Documentation update
• Other: __

Please check if this PR fulfills the following:

• Tests for the changes have been added
• Documentation has been added / updated
• Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

No

Does this PR change default behavior?

No

[ruse-traveler]

Hi all, I wanted to record action items from the 11.25.2025 BIC Simulation Meeting. Let me know if anything's missing/incorrect/misrepresentative!

• Combine existing RawHGCROCHit type with proposed RawCaloroc1BHit type
• Add new vector member for Caloroc1BSample component

Then I can't remember if we explicitly talked about this in the meeting, but it might make sense to rename HGCROCSample and RawHGCROCHit to CALOROC1ASample and RawCALOROCHit respectively...

[veprbl]

HGCROC is not the same as CALOROC1A?

[veprbl]

If yes, then what is the better name? RawROCHit?

[ruse-traveler]

HGCROC is not the same as CALOROC1A?
If yes, then what is the better name? RawROCHit?

Ah! Then I may have misunderstood the discussion... What's the difference between the 1A and the HGC?
I think RawROCHit's a good name if they are different, though!

[mhkim-anl]

Thank you very much for arranging the action items and for the discussion on the name of the data model! If I remember correctly, the data structure of the HGCROC chip is as same as the CALOROC1A (I'll cross-check this point). So I've updated the edm4eic.yml accordingly. Please let me know if I've misunderstood anything from the last simulation meeting.

[veprbl]

Can somebody confirm whether HGCROC and CALOROC1A have the same fields?

[mandrenguyen]

Yes, I think the same data structure is appropriate. The CALOROCA will have a different number of channels and will be adapted for the EIC clock, but it will have the same format (ADC/TOT/TOA). The CALOROCB will instead by dual-gain ADC (no TOT).