Heavy Ion Alert

Heavy Ion Alert is an international group of critics concerned about the insufficiency of existing safety arguments regarding Large Hadron Collider heavy ion collisions – between lead nuclei – and the unsatisfactory nature of the associated regulatory process.

P. Katsas, ‘Strangelet hunt at CMS’,
QCD at Cosmic Energies II Workshop, Skopelos,
Greece, 25 Sep - 1 Oct 2005.
Slide 32 from presentation here.
Table 6.3, p. 112, E. Gładysz-Dziaduś, ‘Are Centauros exotic signals of the QGP?’,
Phys. Part. Nucl. 34 (2001); also Fz. Elem. Chast. Atom. Yadra 34 (2003) 565-678;
See arxiv version, or for also allowing postive charge in revised arxiv version here.

ALICE Technical Proposal for A Large Ion Collider Experiment at the CERN LHC’,
CERN Document codes: CERN / LHCC / 9571; LHCC / P3 (1995),
Chapter 11 - ‘Physics performance’ Sect. 10.

Note that Z/A in range -.5 to +.5 implies a charge that is negative, neutral or positive.
Table 6.3, p. 112 E. Gładysz-Dziaduś, ‘Are Centauros exotic signals of the QGP?’,
Phys. Part. Nucl. 34 (2001) 285-347.  See arxiv version.
‘ALICE Technical Proposal for A Large Ion Collider Experiment at the CERN LHC’,
Document codes: CERN /LHCC / 9571, LHCC / P3, (1995),
Chapter 11 - ‘Physics performance’ Sect. 10.

Note that MEMOs (metastable exotic multihypernuclei objects) are similar to strangelets, but
without the clear associated risks.
’The University of Athens (Greece) in CMS’, CMS times 3 Dec 2007.
See also shortened podcast interview here.
E. Farhi and R.L. Jaffe, ‘Strange matter’, Phys. Rev.
D30(11) (1984) 2379-2390, p. 2390, abstract.
From CMStimes 6 July 2009

P. Katsas, A.D. Panagiotou and E. Gladysz-Dziadus for the CMS/CASTOR Group,
‘Searching for Strange Quark Matter with the CMS/
CASTOR Detector at the LHC’ CMS-HI meeting.  Slide 30 from here.
R.L. Jaffe, W. Busza, F. Wilczek and J. Sandweiss,
‘Review of speculative “disaster scenarios” at RHIC’,
Rev. Mod. Phys. 72(4) (2000) 1125-1140,  p.11 of arXiv version.

Email: info@heavyionalert.org
As shown below, CASTOR is the LHC's detector primarily for strangelets:
According to both CASTOR theory and another CERN theory, strangelets could satisfy dangerous attribute (i) of negative
Again according to these theories, LHC strangelets could also satisfy dangerous attribute (ii) of stability:
CASTOR theory and the likelihood of strangelet production:

Eric Penrose | Email: epenrose@heavyionalert.org

All internet links as given in the references were functional and freely accessible at the time of the compilation of this report. If at some point in the future some of them are no longer functional or accessible, proof can be obtained by contacting the author.

Images on this page and in the report are included in accordance with a ‘fair use’ policy.

Official safety review of LHC
undertaken by – members of

Yet both the Swiss Federal Council and
its supervisory committees either
contradict or do not admit to this non

See our open letter (response) to the
Swiss supervisory committees,
responsible for the Swiss Federal
Council. This, and our appeal letter,
also concerns the contradictions shown
on left and in above report.
Heavy Ion Alert's Open Letter
and previous correspondence:
Statements of CERN researchers contradict arguments used as safety assurances in CERN's LHC safety review

See report:

‘How CERN’s Documents Contradict its own Safety Assurances: Plans for ‘Strangelet’ Detection at the LHC’

The statements – shown further below – by CERN's own Large
Hadron Collider researchers, are not compatible with many of
CERN's safety assurances. This questions the reliability of the
assurances of LHC safety that we have been presented with,
particularly regarding the LHC lead ion collisions, which will
restart later this year.

For more examples of contradictions from CERN's
own LHC researchers with the statements of CERN's safety
report and an outline of available doubts by physicists
concerning the remaining assurance arguments, see our report.

What are dangerous strangelet attributes? - As shown here:
i) negative electric charge and ii) stability: