Pith Number

pith:GNVDWHA2

pith:2025:GNVDWHA24OCEQICEDQ62WRYKBX

not attested not anchored not stored refs pending

Design, construction, and testing of the PandaX-xT cryogenics system

Jianglai Liu, Li Zhao, Shuaijie Li, Xiang Xiao, Xiangyi Cui, Xu Wang

The PandaX-xT cryogenics system with two cooling towers delivers about 1900 W at 178 K and keeps xenon pressure stable within 1 kPa for a month in a one-tonne prototype.

arxiv:2512.23974 v3 · 2025-12-30 · physics.ins-det

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\usepackage{pith}
\pithnumber{GNVDWHA24OCEQICEDQ62WRYKBX}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

The cryogenics system with two cooling towers has achieved about 1900 W cooling power at 178 K. The liquid nitrogen coil provides emergency cooling power of more than 1500 W at liquid xenon temperature. For the prototype of a 1-tonne liquid xenon detector, the fluctuation of xenon saturated vapor pressure remains below 1 kPa over one month, while the pressure is around 210 kPa.

C2weakest assumption

The performance measured on the 1-tonne prototype and individual cooling towers will scale without major thermal losses, leaks, or safety issues to the full 43-tonne detector volume.

C3one line summary

The PandaX-xT cryogenics system with two cooling towers delivers 1900 W cooling power at 178 K, the liquid-nitrogen coil supplies over 1500 W emergency cooling, and a 1-tonne prototype maintains xenon vapor pressure stable within 1 kPa for one month.

Receipt and verification

First computed	2026-06-02T02:04:12.753137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

336a3b1c1ae3844820441c3dab470a0de94dbb467e8dd6886681e17d2210315b

Aliases

arxiv: 2512.23974 · arxiv_version: 2512.23974v3 · doi: 10.48550/arxiv.2512.23974 · pith_short_12: GNVDWHA24OCE · pith_short_16: GNVDWHA24OCEQICE · pith_short_8: GNVDWHA2

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/GNVDWHA24OCEQICEDQ62WRYKBX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 336a3b1c1ae3844820441c3dab470a0de94dbb467e8dd6886681e17d2210315b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62b651cf722b581be53434b6e67bcfb2bbb06a2fda96524e10afdc3f5049289c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2025-12-30T04:07:26Z",
    "title_canon_sha256": "700ecab434decb067497c963640b83a02b52abb588ba51586115f02501eea4e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.23974",
    "kind": "arxiv",
    "version": 3
  }
}