Pith Number

pith:VXXKSRIR

pith:2026:VXXKSRIRJDNDA4V6DSFLGKL5TJ

not attested not anchored not stored refs resolved

Design and Verification of a New Current Source for Tsinghua Tabletop Kibble Balance

Kang Ma, Lisha Peng, Shisong Li, Songling Huang, Wei Zhao, Yuhan Ma

A coarse-fine dual-DAC current source reaches 1 nA/A stability in three minutes for tabletop Kibble balances

arxiv:2605.16833 v1 · 2026-05-16 · physics.ins-det

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\pithnumber{VXXKSRIRJDNDA4V6DSFLGKL5TJ}

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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

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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

Experimental results show that the Allan deviation reaches 1 nA/A at an integration time of approximately 3 minutes, representing a tenfold improvement in measurement speed compared to commercial-source-based setups.

C2weakest assumption

The assumption that the observed Allan deviation improvement is attributable to the proposed coarse-fine dual-DAC topology with active digital feedback rather than to unstated environmental controls, specific load conditions, or post-processing choices in the OMTP scheme.

C3one line summary

A composite coarse-fine current source achieves 1 nA/A Allan deviation at 3-minute integration for Tsinghua tabletop Kibble balance, offering tenfold faster measurements than commercial sources.

References

5 extracted · 5 resolved · 0 Pith anchors

[1] Precision control of resistive power in kibble balance coils: an advanced method for minimizing temperature- related magnetic errors, 2025

[2] Updates on the tsinghua tabletop kibble balance, 2025

[3] Design of the tsinghua tabletop kibble balance, 2023

[4] A permanent magnet system for kibble balances, 2017

[5] A bi-polar current source with high short-term stability for tsinghua tabletop kibble balance, 2024

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-05-20T00:03:25.183556Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

adeea9451148da3072be1c8ab3297d9a40cd1ec71790f38b1ccfee022b80edcd

Aliases

arxiv: 2605.16833 · arxiv_version: 2605.16833v1 · doi: 10.48550/arxiv.2605.16833 · pith_short_12: VXXKSRIRJDND · pith_short_16: VXXKSRIRJDNDA4V6 · pith_short_8: VXXKSRIR

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/VXXKSRIRJDNDA4V6DSFLGKL5TJ \
  | 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: adeea9451148da3072be1c8ab3297d9a40cd1ec71790f38b1ccfee022b80edcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ece0ff4616ddf43a3a690649410dd7a5741c841eeed557e12879b000676a525",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2026-05-16T06:33:36Z",
    "title_canon_sha256": "b09f213d177211388bf5a33ab7cce5208ecb9cc518637fe5f0ed8d2310aed640"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.16833",
    "kind": "arxiv",
    "version": 1
  }
}