SQUIDs - 2025 ACF Winter - Buzzpoints App

Question

The University of Washington’s ADMX experiment uses these devices as RF amplifiers to search for evidence of axions. For 10 points each:

[10h] Name these devices containing superconducting loops that can detect extremely weak magnetic fields, down to about 5 quintillionths of a tesla.

ANSWER: SQUIDs [or Superconducting Quantum Interference Devices]

[10e] SQUIDs are extremely sensitive because they experience very little of this random fluctuation in an electric signal. The intensity of this phenomenon’s “white” type does not depend on frequency.

ANSWER: noise [accept shot noise or white noise]

[10m] SQUIDs contain two of these devices, which are made of an insulator sandwiched between two superconductors. Observations of quantum tunneling in these devices were awarded the 2025 Nobel Prize in Physics.

ANSWER: Josephson junctions [or JJs]

<Editors, Physics>

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Summary


California	Main	Y	5	28.00	100%	80%	100%
Canada	Main	Y	1	30.00	100%	100%	100%
Florida	Main	Y	12	15.00	92%	25%	33%
Great Lakes	Main	Y	5	14.00	100%	20%	20%
Lower Mid-Atlantic	Main	Y	7	18.57	100%	43%	43%
Midwest	Main	Y	8	12.50	100%	13%	13%
North	Main	Y	10	14.00	100%	30%	10%
Northeast	Main	Y	4	10.00	75%	25%	0%
Overflow	Main	Y	4	15.00	100%	25%	25%
South Central	Main	Y	5	12.00	100%	20%	0%
Southeast	Main	Y	12	14.17	92%	33%	17%
UK	Main	Y	4	12.50	100%	25%	0%
Upper Mid-Atlantic	Main	Y	8	13.75	88%	25%	25%
Upstate NY	Main	Y	8	13.75	100%	13%	25%
2025 ACF Nationals	2025-08-09	Y	13	15.38	100%	23%	31%
2024 ARCADIA at UC Berkeley	04/19/2025	Y	3	13.33	100%	33%	0%

Data


Berkeley C	Stanford C	10	10	10	30
Berkeley E	Berkeley A	10	10	10	30
Berkeley D	Berkeley F	10	10	10	30
Berkeley B	Stanford B	10	10	0	20
Ottawa	Guelph B	0	10	0	10
McGill B	Queen's B	10	10	0	20
McMaster C	McGill C	10	10	0	20
Toronto B	McMaster A	10	10	10	30
Queen's A	Toronto K	0	10	10	20
Toronto A	Waterloo	10	10	10	30
Guelph A	Toronto F	0	10	0	10
Toronto G	Toronto D	0	10	0	10
Toronto H	Toronto E	0	10	0	10
Toronto I	McMaster B	0	10	0	10
Toronto J	McGill A	0	10	0	10
Toronto Metropolitan	Carleton	0	0	0	0
Stanford A	UCSC	10	10	10	30
Claremont Scripps	UCSD Vices and Virtues	10	10	10	30
Melbourne B	Melbourne A	0	10	0	10
UCF B	FIU	0	10	0	10
UF B	UF A	0	10	0	10
UF D	ERAU A	0	10	0	10
UCF A	UF E	10	10	10	30
CWRU A	Pitt B	10	10	10	30
CWRU B	Kenyon B	0	10	10	20
CWRU C	OSU C	0	10	0	10
MSU A	Pitt C	10	10	10	30
Pitt A	MSU B	10	10	0	20
OSU A	Kenyon A	0	10	0	10
OSU D	OSU B	0	10	0	10
Clemson B	North Carolina A	0	10	0	10
North Carolina C	Liberty A	0	10	0	10
Liberty B	NC State	0	10	0	10
North Carolina B	Virginia B	0	10	0	10
Clemson A	Roanoke	0	10	0	10
Tennessee B	James Madison	0	10	0	10
Tennessee A	Tusculum	0	10	0	10
Virginia A	South Carolina B	10	10	10	30
George Washington A	George Mason A	0	10	0	10
Penn B	George Washington B	0	10	0	10
Georgetown B	UMBC A	0	10	0	10
Johns Hopkins A	Georgetown A	10	10	10	30
Johns Hopkins C	Johns Hopkins B	0	10	0	10
Maryland A	NYU A	0	10	10	20
Maryland B	George Mason C	0	10	10	20
George Mason B	Maryland C	0	10	0	10
NYU B	Catholic University	0	10	0	10
VCU A	Penn A	0	10	0	10
Columbia B	Vassar A	0	10	0	10
Rowan A	Columbia C	0	0	0	0
Lehigh A	Rutgers C	0	10	0	10
Princeton A	Swarthmore A	0	10	10	20
WashU D	Missouri A	0	10	0	10
WashU A	Truman State	10	10	10	30
WashU B	Missouri B	0	10	0	10
William Woods	WashU C	0	10	0	10
Minnesota C	Macalester B	0	10	0	10
Iowa State	Minnesota A	0	10	0	10
Minnesota B	Carleton	0	10	0	10
BC A	Bowdoin B	0	0	0	0
Tufts B	BC B	0	10	10	20
Yale A	BU	0	10	0	10
Cornell-UG	Brandeis Clemenceau	10	10	10	30
Bowdoin A	Brandeis Wilson	0	10	0	10
Dartmouth	Brown C	0	10	0	10
Amherst A	Harvard	0	10	0	10
MIT A	Brown A	10	10	10	30
Brown B	Tufts A	0	10	0	10
Williams	MIT B	0	10	10	20
Yale B	Brandeis Lloyd George	0	10	0	10
Macalester A	Nebraska	0	10	0	10
Wisconsin	St. Thomas	0	10	10	20
Brandeis Orlando	Amherst B	0	10	0	10
British Columbia A	Alberta	0	10	0	10
British Columbia B	British Columbia C	0	10	0	10
Washington B	British Columbia D	0	10	10	20
Simon Fraser	Washington A	0	10	0	10
Alberta B	Northwestern C	0	10	0	10
Arizona State A	Tulsa	0	10	0	10
Iowa	Arizona State B	0	10	0	10
Northwestern B	Ohio	10	10	10	30
Rose State	Northwestern A	0	0	0	0
Texas A	UTD B	10	10	10	30
Texas B	UTD A	0	10	0	10
UCO	McGill D	0	10	0	10
Auburn A	Alabama B	10	10	10	30
Alabama A	Auburn B	0	10	0	10
Georgia Tech C	Sewanee A	0	10	0	10
Huntsville A	Mississippi State A	0	10	0	10
Huntsville B	Georgia Tech A	0	10	0	10
Vanderbilt B	UAB A	0	10	0	10
Vanderbilt A	Georgia Tech B	0	10	0	10
Bruin A	Georgia Tech D	10	10	0	20
Birmingham A	LSE A	10	10	0	20
Bristol B	Cambridge D	10	10	0	20
Cambridge A	Bristol A	0	10	10	20
Cornell-DII	Binghamton A	0	10	10	20
RIT A	RIT B	0	10	0	10
Syracuse	Rochester	0	10	0	10
Cambridge C	Oxford A	10	10	0	20
Durham B	LSE B	0	10	0	10
Edinburgh A	Southampton A	0	10	0	10
Sheffield A	Imperial A	0	10	0	10
Imperial C	City St George's A	0	10	10	20
Manchester A	Warwick A	10	10	0	20
Oxford B	Edinburgh B	0	10	0	10
Sheffield B	Durham A	0	10	0	10
Lancaster A	Southampton B	0	10	10	20
Warwick B	Cambridge B	0	10	0	10