MiniGRAIL

Gravitational Radiation Antenna In Leiden

Kamerlingh Onnes Laboratory, Leiden University, The Netherlands

MiniGRAIL Evolution



2004 Notes 2005 Notes 2006 Notes
January 2004 measuring attenuation VIS at room temperature January 2005 End of cryogenic run 7A January 2006
February 2004 February 2005 February 2006
March 2004 Arrival of the new sphere March 2005 Prepare second 2-stage SQUID module March 2006
April 2004 Cryogenic run 6 April 2005 Prepare third 2-stage SQUID module April 2006
May 2004 Cryogenic run 6 May 2005 Cryogenic run 7B May 2006
June 2004 Cryogenic run 6 June 2005 Amaldi 6, Okinawa, Japan June 2006
July 2004 LISA 5 / GR17 July 2005 Prepare for cryogenic run 8 July 2006 MiniGRAIL extreme makeover; shielding
August 2004 Annealing the sphere August 2005 Cryogenic run 8 August 2006 MiniGRAIL extreme makeover; new dilution refrigerator
September 2004 Testing new transducers September 2005 Cryogenic run 8 September 2006
October 2004 Testing new transducers October 2005 Cryogenic run 8 October 2006
November 2004 Cryogenic run 7 November 2005 Cryogenic run 8 November 2006
December 2004 Cryogenic run 7 December 2005 December 2006

2001 Notes 2002 Notes 2003 Notes
January 2001 Casting/machining of MiniGRAIL January 2002 Design thermal anchorings January 2003 4th cryogenic run
February 2001 February 2002 Testfacility transducers February 2003 Cryogenic test capacitive transducer
March 2001 March 2002 Assemble dr March 2003
April 2001 Arrival of MiniGRAIL April 2002 Radiation shields ready April 2003 Cryogenic test capacitive transducer
May 2001 Annealing MiniGRAIL May 2002 Prepare run 2 May 2003 Mounting transducer on MiniGRAIL
June 2001 First cryogenic run June 2002 Leak June 2003 cryogenic run 5
July 2001 Amaldi 4 July 2002 Plug July 2003 Amaldi 5
August 2001 New springs suspension August 2002 New SQUID module August 2003 cryogenic run 5
September 2001 Design 3He pumping tube September 2002 Leak September 2003 testing transformer for capacitive read out
October 2001 Design still October 2002 Third cryogenic run October 2003 Coupling SQUID to transformer
November 2001 Assemble 3He pumping tube November 2002 Noise measurements 2-stage SQUID November 2003 Testing several SQUID configurations
December 2001 Assemble still December 2002 4th cryogenic run December 2003 Transducer development

April 2001
April 27: Arrival in Leiden

November 2000 - March 2001
Casting and machining of the of the CuAl6% sphere and the masses of the suspension at ItalBronze (Brazil)