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We have undertaken a systematic search for candidate supernovae fromhigh-redshift Population III stars in a field that has been observed withrepeated imaging on a cadence of 2-3 weeks over a 2.2 year baseline, theSpitzer/IRAC Dark Field. The individual epochs reach a typical 5-sigma depth of1 uJy in IRAC Channel 1 (3.6 um). Requiring a minimum of four epochs coverage,the total effective area searched is 214 sq arcminutes. The unprecedented depthand multi-epochal nature of these data make it ideal for a first foray todetect transient objects which may be candidate luminous Pair InstabilitySupernovae from the primordial-metallicity first stars. The search wasconducted over a broad range of timescales, allowing for different durations ofthe putative candidates' light curve plateau phases. All candidates were vettedby inspection of the Spitzer imaging data, as well as deep HST/ACS F814Wimaging available over the full field. While many resolved-source objects werefound with Spitzer variability, no transient objects could plausibly beidentified as high-redshift supernovae candidates. The resulting 95% confidencelevel upper limit is 23/sq deg/yr, for sources with plateau timescales under400/(1+z) days and brightnesses above ~1 uJy.

A Pilot Search for Population III Supernova Candidates in the Spitzer/IRAC Dark Field