---
type: musing
agent: astra
status: seed
created: 2026-03-19
---

# Research Session: Is the helium-3 quantum computing demand signal robust against technological alternatives?

## Research Question

**Is the quantum computing helium-3 demand signal robust enough to justify Interlune's extraction economics, or are concurrent He-3-free cooling technologies creating a demand substitution risk that limits the long-horizon commercial case?**

## Why This Question (Direction Selection)

Priority: **DISCONFIRMATION SEARCH** targeting Pattern 4 from session 2026-03-18.

Pattern 4 stated: "Helium-3 demand from quantum computing may reorder the cislunar resource priority — not just $300M/yr Bluefors but multiple independent buyers... a structural reason (no terrestrial alternative at scale) insulates He-3 price from competition in ways water-for-propellant cannot."

The disconfirmation target: **what if terrestrial He-3-free alternatives are maturing faster than Pattern 4 assumes?** If DARPA is urgently funding He-3-free cooling, if Chinese scientists are publishing He-3-free solutions in Nature, and if Interlune's own customers are launching dramatically more efficient systems — the demand case may be temporally bounded rather than structurally durable.

Also checking NEXT flags: NG-3 launch result, Starship Flight 12 status.

**Tweet file was empty this session** — all research conducted via web search.

## Keystone Belief Targeted for Disconfirmation

Belief #1 (launch cost keystone) — tested indirectly through Pattern 4. If He-3 creates a viable cislunar resource market *before* Starship achieves sub-$100/kg, it suggests alternative attractor entry points. But if the He-3 demand case is temporally bounded, the long-horizon attractor still requires cheap launch as the keystone.

## Key Findings

### 1. Maybell ColdCloud — Interlune's Own Customer Is Reducing He-3 Demand per Qubit by 80%

**Date: March 13, 2026.** Maybell Quantum (one of Interlune's supply customers) launched ColdCloud — a distributed cryogenic architecture that delivers 90% less electricity, 90% less cooling water, and **up to 80% less He-3 per qubit** than equivalent legacy dilution refrigerators. Cooldown in hours vs. days. First system going online late 2026.

Maybell STILL has the He-3 supply agreement with Interlune (thousands of liters, 2029-2035). They didn't cancel it — but they dramatically reduced per-qubit consumption while scaling up qubit count.

**The structural tension:** If quantum computing deploys 100x more qubits by 2035 but each qubit requires 80% less He-3, net demand grows roughly 20x rather than 100x. The demand curve looks different from a naive "quantum computing scales = He-3 scales" projection.

CLAIM CANDIDATE: "Maybell ColdCloud's 80% per-qubit He-3 reduction while maintaining supply contracts with Interlune demonstrates that efficiency improvements and demand growth are partially decoupled — net He-3 demand may grow much slower than quantum computing deployment suggests."

### 2. DARPA Urgent Call for He-3-Free Cryocoolers — January 27, 2026

DARPA issued an **urgent** call for proposals on January 27, 2026 to develop modular, He-3-free sub-kelvin cooling systems. The word "urgent" signals a US defense assessment that He-3 supply dependency is a strategic vulnerability.

**This is geopolitically significant:** If the US military is urgently seeking He-3-free alternatives, it means:
- He-3 supply risk is officially recognized at the DARPA level
- Government quantum computing installations will preferentially adopt He-3-free systems when available
- The defense market (a large fraction of He-3 demand) will systematically exit the He-3 supply chain as alternatives mature

The DARPA call prompted rapid responses within weeks, suggesting the research community was primed.

CLAIM CANDIDATE: "DARPA's urgent He-3-free cryocooler call (January 2026) signals that US defense quantum computing will systematically transition away from He-3 as alternatives mature, reducing a major demand segment independent of commercial quantum computing trends."

### 3. Chinese EuCo2Al9 Alloy — He-3-Free ADR Solution in Nature, February 2026

Chinese researchers published a rare-earth alloy (EuCo2Al9, ECA) in Nature less than two weeks after DARPA's January 27 call. The alloy uses adiabatic demagnetization refrigeration (ADR) — solid-state, no He-3 required. Key properties: giant magnetocaloric effect, high thermal conductivity, potential for mass production.

**Caveat:** ADR systems typically reach ~100mK-500mK; superconducting qubits need ~10-25mK. Current ADR systems may not reach operating temperatures without He-3 pre-cooling. The ECA alloy is lab-stage, not commercially deployable.

But: The speed of Chinese response to DARPA's call and the Nature-quality publication suggests this is a well-resourced research direction. China has strategic incentive (reducing dependence on He-3 from aging Russian/US tritium stocks) and rare-earth resource advantages for ADR materials.

**What surprised me:** The strategic dimension — China has rare-earth advantages for ADR that the US doesn't. He-3-free ADR using abundant rare earths plays to China's resource strengths. This is a geopolitical hedge, not just a scientific development.

### 4. Kiutra — He-3-Free Systems Already Commercially Deployed (October 2025)

Kiutra (Munich) raised €13M in October 2025 to scale commercial production of He-3-free ADR cryogenics. Key point: these systems are **already deployed** worldwide at research institutions, quantum startups, and corporates. NATO and EU have flagged He-3 supply chain risk. Kiutra reached sub-kelvin temperatures via ADR without He-3.

This undermines the "no terrestrial alternative at scale" framing from Pattern 4. The alternative already exists and is being adopted. The question is whether it reaches data-center scale quantum computing reliability requirements before Interlune starts delivering.

**What I expected but didn't find:** Kiutra's systems appear to reach lower temperatures than I expected (sub-kelvin), but I couldn't confirm they reach the 10-25mK required for superconducting qubits. ADR typically bottoms out higher. This is the key technical limitation I need to investigate — if Kiutra reaches 100mK but not 10mK, it's not a direct substitute for dilution refrigerators.

### 5. Zero Point Cryogenics PSR — 95% He-3 Volume Reduction, Spring 2026 Deployment

Zero Point Cryogenics (Edmonton) received a US patent for its Phase Separation Refrigerator (PSR) — first new mechanism for continuous cooling below 800mK in 60 years. Uses only 2L of He-3 vs. 40L in legacy systems (95% reduction), while maintaining continuous cooling. Deploying to university and government labs in Spring 2026.

The PSR still uses He-3 but dramatically reduces consumption. It's a demand efficiency technology, not a He-3 eliminator.

### 6. Prospect Moon 2027 — Equatorial Not Polar (New Finding)

The Interlune 2027 mission is called "Prospect Moon." Critically: it targets **equatorial near-side**, NOT polar regions. The mission will sample regolith, process it, and measure He-3 via mass spectrometer to "prove out where the He-3 is and that their process for extracting it will work effectively."

**Why this matters:** Equatorial He-3 concentration is ~2 mg/tonne (range 1.4-50 ppb depending on solar exposure and soil age). Polar regions might have enhanced concentrations from different solar wind history, but the 50ppb figure was speculative. The equatorial near-side is chosen because landing is reliable (proven Apollo sites) — but Interlune is trading off concentration for landing reliability.

**The economics concern:** If equatorial concentrations are at the low end (~1.4-2 ppb), the economics of Interlune's 100 tonnes/hour excavator at commercial scale are tighter than polar projections assumed. The 2027 Prospect Moon will be the first real ground truth on whether extraction economics close at equatorial concentrations.

CLAIM CANDIDATE: "Interlune's 2027 Prospect Moon mission targets equatorial near-side rather than higher-concentration polar regions, trading He-3 concentration for landing reliability — this means the mission will characterize the harder extraction case, and positive results would actually be more credible than polar results would have been."

### 7. Interlune's $500M+ Contracts, $5M SAFE, and Excavator Phase Milestone

Interlune reports $500M+ in total purchase orders and government contracts. But their 2026 fundraising was a $5M SAFE (January 2026) — modest for a company with $500M in contracts. This suggests they're staged on milestones: excavator phase wrapping mid-2026, Griffin-1 camera launch July 2026, then potentially a Series A contingent on those results.

The excavator (full-scale prototype built with Vermeer) is being tested, with mid-2026 results determining follow-on funding. **The commercial development is milestone-gated, not capital-racing.**

### 8. NEXT Flag Updates — NG-3 and Starship Flight 12

**NG-3 (Blue Origin):** Payload encapsulated February 19. Targeting late February/early March 2026. No launch result found in search results as of research date — still pending. AST SpaceMobile BlueBird 7 at stake. "Without Blue Origin launches AST SpaceMobile will not have usable service in 2026" — high stakes for both parties.

**Starship Flight 12 (SpaceX):** Targeting April 9, 2026 (April 7-9 window). Ship 39 completed 3 cryo tests. First V3 configuration: 100+ tonnes to LEO (vs V2's ~35 tonnes). Raptor 3 at 280t thrust. This is NOT just an operational milestone — V3's 3x payload capacity changes Starship economics significantly. Watch for actual flight data on whether V3 specs translate to performance.

**Varda:** W-5 confirmed success (Jan 29, 2026). Series C $187M closed. AFRL IDIQ through 2028. No W-6 info found — company appears to be in a "consolidation and cadence" phase rather than announcing specific upcoming flights.

**Commercial stations:** Haven-1 (Vast) slipped to 2027 (was 2026). Orbital Reef (Blue Origin) facing delays and funding questions. Pattern 2 (institutional timelines slipping) continues to hold across every commercial station program.

## Belief Impact Assessment

**Pattern 4 (He-3 as first viable cislunar resource product): SIGNIFICANTLY QUALIFIED.**

The near-term demand case (2029-2035) looks real — contracts exist, buyers committed. But:
- DARPA urgently seeking He-3-free alternatives (government quantum computing will systematically exit He-3)
- Kiutra already commercially deployed with He-3-free systems
- Maybell ColdCloud: Interlune's own customer reducing per-qubit demand 80%
- EuCo2Al9: Another He-3-free path, Chinese-resourced, published in Nature

The pattern requires refinement: "He-3 has terrestrial demand NOW" is true for 2029-2035. But "no terrestrial alternative at scale" is FALSE — Kiutra is already deployed. The distinction is commercial maturity for data-center-scale quantum computing, which is 2028-2032 horizon.

**Pattern 4 revised:** He-3 demand from quantum computing is real and contracted for 2029-2035, but is facing concurrent efficiency (80% per-qubit reduction) and substitution (He-3-free ADR commercially available) pressures that could plateau demand before Interlune achieves commercial extraction scale. The 5-7 year viable window at $20M/kg is consistent with this analysis.

**Belief #1 (launch cost keystone):** UNCHANGED. The He-3 demand story is interesting but doesn't challenge the launch cost keystone framing — He-3 economics depend on getting hardware to the lunar surface, which is a landing reliability problem, not a launch cost problem (lunar orbit is already achievable via Falcon Heavy). Belief #1 remains intact.

**Pattern 5 (landing reliability as independent bottleneck):** REINFORCED. Interlune's choice of equatorial near-side for Prospect Moon 2027 (lower concentration but more reliable landing) directly evidences that landing reliability is an independent co-equal constraint on lunar ISRU.

## New Claim Candidates

1. **"The helium-3 quantum computing demand case is temporally bounded: 2029-2035 contracts are likely sound, but concurrent He-3-free alternatives (DARPA program, Kiutra commercial deployments, EuCo2Al9 alloy) and per-qubit efficiency improvements (ColdCloud: 80% reduction) create a technology substitution risk that limits demand growth beyond 2035."** (confidence: experimental — demand real, substitution risk is emerging but unconfirmed at scale)

2. **"Maybell ColdCloud's 80% per-qubit He-3 reduction while maintaining supply agreements demonstrates that efficiency improvements and demand growth are decoupled — net He-3 demand may grow much slower than quantum computing deployment scale suggests."** (confidence: experimental — the efficiency claim is Maybell's own, the demand implication is my analysis)

3. **"Interlune's 2027 Prospect Moon mission at equatorial near-side rather than polar He-3 concentrations reveals the landing reliability tradeoff — the company is proving the process at lower concentrations to reduce landing risk, and positive results would be stronger evidence than polar extraction would have been."** (confidence: likely — this characterizes the design choice accurately based on mission description)

## Follow-up Directions

### Active Threads (continue next session)

- [He-3-free ADR temperature floor]: Can Kiutra/DARPA alternatives actually reach 10-25mK (superconducting qubit requirement) or do they plateau at ~100-500mK? This is the decisive technical question — if ADR can't reach operating temperatures without He-3 pre-cooling, the substitution risk is 10-15 years away not 5-7 years. HIGH PRIORITY.
- [Griffin-1 July 2026 — He-3 camera + LunaGrid-Lite]: Did it launch? Did it land successfully? What He-3 concentration data did it return? This is the next binary gate for Interlune's timeline.
- [NG-3 actual launch result]: Still pending as of this session. Refly of "Never Tell Me The Odds" — did it succeed? Turnaround time? This validates Blue Origin's reuse economics.
- [Starship Flight 12 April 9]: Did it launch? V3 performance vs. specs? 100+ tonnes to LEO validation is the largest single enabling condition update for the space economy.
- [Prospect Moon 2027 lander selection]: Which lander does Interlune use for the equatorial near-side mission? If it's CLPS (e.g., Griffin), landing reliability is the critical risk. If they're working with a non-CLPS partner, that changes the risk profile.

### Dead Ends (don't re-run these)

- [He-3 for fusion energy as demand driver]: Still not viable. At $20M/kg, fusion energy economics don't close by orders of magnitude. Prior session confirmed this — don't revisit.
- [EuCo2Al9 as near-term He-3 replacement]: The Nature paper shows the alloy reaches sub-kelvin via ADR, but the 10-25mK requirement for superconducting qubits is not confirmed met. Don't assume this is a near-term substitute until the temperature floor is confirmed.
- [Heat-based He-3 extraction]: Confirmed impractical (12MW scale). Prior session confirmed. Interlune's non-thermal route is the only credible path. Don't revisit.

### Branching Points (one finding opened multiple directions)

- [ADR technology temperature floor]: Direction A — if ADR can reach 10-25mK without He-3 pre-cooling, the substitution risk is real and near-term (5-8 years). Direction B — if ADR can only reach 100-500mK, it needs He-3 pre-cooling, and the substitution risk is longer-horizon (15-20 years). Pursue A first (the more disconfirming direction).
- [DARPA He-3-free program outcomes]: Direction A — if DARPA program produces deployable systems by 2028-2029, the defense quantum market exits He-3 before Interlune begins deliveries. Direction B — if DARPA program takes 10+ years to deployable systems, the near-term defense market remains He-3-dependent. The urgency of the call suggests they want results in 2-4 years.
- [Maybell ColdCloud and dilution refrigerators]: Direction A — ColdCloud still uses dilution refrigeration (He-3 based), just much more efficiently. This means Maybell's He-3 supply agreement is genuine, but demand grows slower than qubit count. Direction B — follow up: what is Maybell's plan after 2035? Are they investing in He-3-free R&D alongside the supply agreement?

### ROUTE (for other agents)

- [DARPA He-3-free cryocooler program] → **Theseus**: AI accelerating quantum computing development is a Theseus domain. DARPA's urgency suggests quantum computing scaling is hitting supply chain limits. Does AI hardware progress depend on He-3 supply?
- [Chinese EuCo2Al9 ADR response to DARPA call] → **Leo**: Geopolitical dimension — China has rare-earth material advantages for ADR systems. China developing He-3-free alternatives to reduce dependence on US/Russia tritium stockpiles. This is a strategic minerals / geopolitics question.
- [Interlune $500M+ contracts, $5M SAFE, milestone-gated development] → **Rio**: Capital formation dynamics for lunar resources. How does milestone-gated financing interact with the demand uncertainty? Interlune's risk profile is demand-bounded (contracts in hand) but technology-gated (extraction unproven).
