Discussion

Gunn presented reference images and dimensions of the GSI prototype CCC. Estimated vertical requirement: 1.5–2.0 m above the beam pipe.
Beatrice reviewed CATIA models:

TDC85

Beam height: 1.45 m
Beam-to-ceiling: 1.15 m → Not sufficient unless cryostat height reduced.

TCC8

Beam height: 1.50 m
Beam-to-ceiling: 6.20 m → Ample space.

Beam pipe tilt:

TDC85: 0.24°, TCC8: 0.72°.

Actions

Provide screenshots with floor/ceiling clearances for both locations. (Beatrice) - ONGOING
Provide available lateral space around the beam pipe in both locations. (Beatrice) - ONGOING
Send simplified CCC STEP model for integration. (Gunn → Thomas/GSI) - DONE
Check with WP2 how much upstream magnets in TCC8 can be shifted longitudinally. (Gunn, Laurie) - ONGOING (to be followed up in Jan. 2026)

Update (12 Dec 2025)

Torsten comments on Cryostat aspects (reply to James Currie for HSE):

Hi all,

I can give some info to the discussed points:

What is the proposed transport route?

Would this be through the B911 shaft? -> no idea, can we visit the place ? Dewars are prepared in Meyrin at Cryolab. We need one 500 l LHe Dewar, our liquefier service is transporting it to 911. There we need local transport by crane down and also to the higher elevation ground of the CCC, local rolling on wheels of the Dewar.

Do we currently have the dewars at CERN?

Do they have certified lifting points? -> yes and yes, mobile dewars 500 L, those being used at AD in Meyrin. Correct, lifting is standard procedure.

What is the proposed final location of the dewar?

Will it be in the NA CCC location (upstream of TCC8)? -> likely upstream of TCC8 (see slide #5) but tbc. The Dewar is only required for the cooldown and filling procedure; it will no remain in the area. Just during operation with access of personnel.
I am discussing right now the necessity of a gazomter gas He return line for the CCC but also for the experiment itself.

Yours Torsten

Torsten email to me for Cryostat and LHe cooling/filling:

Hi all,

I would like to add to the He Dewar points that this under for the condition that we get the additional LHe fill line into the CCC cryostat design. In that case the cooldown and fill is similar to the AD with 1 day of intervention.

Just to support the discussion how important the point of design modifications is:

If we need to condense He gas like GSI is doing, please let me point out that this is a very risky operation for later condensation performance and operation because all remaining impurities in the supply gas are directly frozen on the 4 K HEX surface of the cryocooler, which reduces later performance. That’s why we would need at least an additional LN2 charcoal trap in the gas flow and all of this for several weeks for cooldown and filling. Its from a cryogenics operation point of view coming with much more risks and also several LN2 500 l Dewars transport. (this Dewars and the filter cryostat would need to be need to be equipment (equipment) purchased by the SHiP experiment. Probably 20 kCHF.

Yours Torsten

Integration update (17 Feb 2026)

Laurie Nevay from BE-EA sent updated SHiP beamline layout along with possible CCC location reserved in grey boxes:

GIS portal "street view" of the TCC8 location: https://panoramas.cern.ch/viewer?id=54729461

And the access door with lift for LHe Dewar (to be checked with HSE and Torsten):