Imperial College London


Faculty of Natural SciencesDepartment of Physics

Professor of Experimental Astrophysics



+44 (0)20 7594 7552t.sumner




1108Blackett LaboratorySouth Kensington Campus






BibTex format

author = {Armano, M and Audley, H and Baird, J and Binetruy, P and Born, M and Bortoluzzi, D and Castelli, E and Cavalleri, A and Cesarini, A and Cruise, AM and Danzmann, K and de, Deus Silva M and Diepholz, I and Dixon, G and Dolesi, R and Ferraioli, L and Ferroni, V and Fitzsimons, ED and Freschi, M and Gesa, L and Giardini, D and Gibert, F and Giusteri, R and Grimani, C and Grzymisch, J and Harrison, I and Heinzel, G and Hewitson, M and Hollington, D and Hoyland, D and Hueller, M and Inchauspe, H and Jennrich, O and Jetzer, P and Karnesis, N and Kaune, B and Korsakova, N and Killow, CJ and Liu, L and Lloro, I and Lobo, JA and Lopez-Zaragoza, JP and Maarschalkerweerd, R and Mailland, F and Mance, D and Martin, V and Martin-Polo, L and Martin-Porqueras, F and Martino, J and Mateos, I and McNamara, PW and Mendes, J and Mendes, L and Meshskar, N and Nofrarias, M and Paczkowski, S and Perreur-Lloyd, M and Petiteau, A and Pfeil, M and Pivato, P and Plagnol, E and Ramos-Castro, J and Reiche, J and R},
doi = {10.1103/PhysRevD.98.062001},
journal = {Physical Review D},
title = {Precision charge control for isolated free-falling test masses: LISA pathfinder results},
url = {},
volume = {98},
year = {2018}

RIS format (EndNote, RefMan)

AB - The LISA Pathfinder charge management device was responsible for neutralizing the cosmic-ray-induced electric charge that inevitably accumulated on the free-falling test masses at the heart of the experiment. We present measurements made on ground and in flight that quantify the performance of this contactless discharge system which was based on photoemission under UV illumination. In addition, a two-part simulation is described that was developed alongside the hardware. Modeling of the absorbed UV light within the Pathfinder sensor was carried out with the Geant4 software toolkit and a separate Matlab charge transfer model calculated the net photocurrent between the test masses and surrounding housing in the presence of AC and DC electric fields. We confront the results of these models with observations and draw conclusions for the design of discharge systems for future experiments like LISA that will also employ free-falling test masses.
AU - Armano,M
AU - Audley,H
AU - Baird,J
AU - Binetruy,P
AU - Born,M
AU - Bortoluzzi,D
AU - Castelli,E
AU - Cavalleri,A
AU - Cesarini,A
AU - Cruise,AM
AU - Danzmann,K
AU - de,Deus Silva M
AU - Diepholz,I
AU - Dixon,G
AU - Dolesi,R
AU - Ferraioli,L
AU - Ferroni,V
AU - Fitzsimons,ED
AU - Freschi,M
AU - Gesa,L
AU - Giardini,D
AU - Gibert,F
AU - Giusteri,R
AU - Grimani,C
AU - Grzymisch,J
AU - Harrison,I
AU - Heinzel,G
AU - Hewitson,M
AU - Hollington,D
AU - Hoyland,D
AU - Hueller,M
AU - Inchauspe,H
AU - Jennrich,O
AU - Jetzer,P
AU - Karnesis,N
AU - Kaune,B
AU - Korsakova,N
AU - Killow,CJ
AU - Liu,L
AU - Lloro,I
AU - Lobo,JA
AU - Lopez-Zaragoza,JP
AU - Maarschalkerweerd,R
AU - Mailland,F
AU - Mance,D
AU - Martin,V
AU - Martin-Polo,L
AU - Martin-Porqueras,F
AU - Martino,J
AU - Mateos,I
AU - McNamara,PW
AU - Mendes,J
AU - Mendes,L
AU - Meshskar,N
AU - Nofrarias,M
AU - Paczkowski,S
AU - Perreur-Lloyd,M
AU - Petiteau,A
AU - Pfeil,M
AU - Pivato,P
AU - Plagnol,E
AU - Ramos-Castro,J
AU - Reiche,J
AU - Robertson,D
AU - Rivas,F
AU - Russano,G
AU - Santoruvo,G
AU - Sarra,P
AU - Shaul,D
AU - Slutsky,J
AU - Sopuerta,CF
AU - Sumner,T
AU - Texier,D
AU - Thorpe,J
AU - Trenkel,C
AU - Vetrugno,D
AU - Vitale,S
AU - Wanner,G
AU - Ward,H
AU - Waschke,S
AU - Wass,PJ
AU - Weber,WJ
AU - Wissel,L
AU - Wittchen,A
AU - Zweifel,P
DO - 10.1103/PhysRevD.98.062001
PY - 2018///
SN - 2470-0010
TI - Precision charge control for isolated free-falling test masses: LISA pathfinder results
T2 - Physical Review D
UR -
UR -
UR -
VL - 98
ER -